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    Development status and trend of antivirus medical protective clothing
    LIU Yang, XIA Zhaopeng, WANG Liang, FAN Jie, ZENG Qiang, LIU Yong
    Journal of Textile Research    2021, 42 (09): 195-202.   DOI: 10.13475/j.fzxb.20200800608
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    In order to provide new insights for production, use, research and standards establishment of medical protective clothing in post-pandemic era, this paper summarizes the current production process, raw materials and use of medical protective clothing. From the point of view of sustainable development, it is pointed out that the development trend of medical protective clothing should focus on classified use, reuse, degradability after disposal, safety, comfort and intelligence. Finally, starting from the application scene of medical protective clothing, aiming at the problems existing in the research, production and use of medical protective clothing, this paper puts forward suggestions such as classifying the production, use and waste of medical protection as soon as possible, perfecting the relevant standards, improving the strategic reserve, strengthening the comfort and wearing psychology research and so on. This paper can provide reference for medical protective clothing production enterprises, users and standard-setting units, as well as public medical materials reserve departments.

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    Electroactive fibrous materials for intelligent wearable textiles
    FANG Jian, REN Song, ZHANG Chuanxiong, CHEN Qian, XIA Guangbo, GE Can
    Journal of Textile Research    2021, 42 (09): 1-9.   DOI: 10.13475/j.fzxb.20210506809
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    To foster the development of smart fibrous materials and intelligent wearable textiles, a detailed overview on electroactive fibrous materials for intelligent wearable textiles was carried in this study. This paper summarized the state-of-the-art of fiber-based and fabric-based intelligent wearable textiles in recent years. Definitions, common preparation methods, development process, and the latest research progress in electroactive fibers were examined and their properties and application fields were systematically classified and discussed from the perspectives of strain sensing, electrochromic, intelligent temperature regulation, energy harvesting and storage, and so on. Future development and problems hindering the use of electroactive fibrous materials in intelligent wearable textiles were highlighted. The future development direction was pointed out for theoretical and technical references in the hope to promote the wide range of applications of electroactive fibrous materials in future intelligent wearable textiles.

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    Structure and properties of four different kinds of domestic cocoon varieties
    XUE Rujing, MO Xiaoxuan, LIU Fujuan
    Journal of Textile Research    2021, 42 (10): 41-46.   DOI: 10.13475/j.fzxb.20201207506
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    In order to develop and design new functional textiles, multilayer morphology, chemical structure, crystalline structure, mechanical properties and thermal conductivity of four varieties of different silkworm cocoons walls were characterized by scanning electron microscope, Fourier transform infrared spectroscopy, X-ray diffractometer, universal material testing machine and temperature and humidity tester, respectively. Theoretical analysis on the multilayer structure was conducted and the design principle of thermal protection products was studied and established. Research results show that all the four varieties of cocoon walls have unique multilayer porous structure, and the diameter of the fibers first increase and then decrease from the outer layer to the inner layer. Although the thickness and size are different, the four varieties of silkworm cocoon walls have good thermal buffering properties. In general, the tiger head cocoon wall has the best heat resistance, and the zebra cocoon wall (green) has the best thermal conductivity. When designing the multilayer structure of thermal protection products, the thermal insulation effect will be greatly improved by appropriately increasing the number of layers of thermal protection products under cost permission.

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    Biomimetic structural coloration of textiles
    WANG Xiaohui, LIU Guojin, SHAO Jianzhong
    Journal of Textile Research    2021, 42 (12): 1-14.   DOI: 10.13475/j.fzxb.20211108514
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    Structural coloration is a physical coloration technology producing colorful materials without using chemical colorants (dyes and pigments), and thus the research and application of structural coloration should be a positive action to facilitate the development of eco-textiles. This paper briefly introduces the basic conceptions and principles of structural coloration, and emphatically introduces the main technological approaches to structural coloration of textiles and the challenges to industrialized application, and also puts forward some ideas and strategies to resolve the problems existed currently. Also, it briefly introduces the application and potential application of biomimetic structural coloration in eco-textiles, fashion textiles and smart textiles, and prospect the future development of biomimetic structural coloration of textiles. The coexistence and combination of both pigmentary coloration and structural coloration will be a promise route for the progress of future textile coloration.

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    Research progress of silk fibroin-based hydrogel bioinks for 3D bio-printing
    JIANG Yulin, WANG Hui, ZHANG Keqin
    Journal of Textile Research    2021, 42 (11): 1-8.   DOI: 10.13475/j.fzxb.20211003008
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    As a natural and ancient protein material, silk fibroin (SF) has become an excellent candidate for 3D printing bioinks due to its excellent properties, and has received extensive attention in the biomedical field. The development of SF in the field of biological 3D printing is summarized, the basic physicochemical and biological characteristics of SF materials are mainly summarized, and the requirements and processability of SF materials as bio-inks for extrusion biological 3D printing, photocurable biological 3D printing and inkjet biological 3D printing are discussed. The research progress of SF based hydrogel inks synthesized with artificial polymers, natural polymers and inorganic functional materials in the field of biological 3D printing in recent years is reviewed, and the challenges are discussed. It is pointed out that with the further development of biological 3D printing technology, SF-based hydrogel constructs formed by biological 3D printing will have a broader application prospect in the biomedical field.

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    Research progress of lignocellulosic multifunctional materials
    KONG Weiqing, HU Shufeng, YU Senlong, ZHOU Zhe, ZHU Meifang
    Journal of Textile Research    2022, 43 (04): 1-9.   DOI: 10.13475/j.fzxb.20220102509
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    The unique material structure, pronounced anisotropy, good mechanical properties, and micro/nano channels of nature wood endow the wood material with many remarkable properties, providing opportunities for the design of functional materials. In order to improve the utilization and high value transformation of lignocellulose, this review summarized the development of lignocellulose functional materials in view of the structure and the physical/chemical properties of lignocellulose. The effects of structural design and regulation on the properties of lignocellulosic functional materials were scrutinized. The research progress in using lignocellulosic multifunctional fiber materials as structural lightweight materials, biodegradable materials, nanofluids/energy materials, biological materials and textile materials in recent years was reviewed, and the challenges were discussed. The future development direction is proposed to provide theoretical basis and technical support for the high value transformation of lignocellulose and its modern application.

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    Research progress on flame-retardation and multi-functionalization of textiles
    XU Yingjun, WANG Fang, NI Yanpeng, CHEN Lin, SONG Fei, WANG Yuzhong
    Journal of Textile Research    2022, 43 (02): 1-9.   DOI: 10.13475/j.fzxb.20211203809
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    Most textiles are highly flammable and often bring fire hazards. It is thus of great significance for improving flame retardancy of fabrics. Differentiation and functionalization of fabrics have become the mainstreams in both academic and industrial communities. However, flame-retardant multifunctional fabrics with well-balanced performance (e.g., softness, air permeability, comfort, and drape) have been rarely reported. Designing of functional monomers and additives with coordinated functions and then incorporating them into the fabric system via efficient technologies can be the keys to obtaining flame-retardant multifunctional fabrics. This paper presents work focusing on flame-retardant multifunctional fabrics. Some approaches towards coordination and cooperation among the multiple functions of the fabrics were discussed, and intrinsically flame-retardant and anti-dripping multifunctional polyester were introduced. Flame-retardant antibacterial, anti-corrosion, and water/oil-proof cotton and viscose fabrics, and polyester/cotton blend fabrics via surface treatments were highlighted. In addition, a brief prospect on the opportunities and challenges of the fields was provided, aiming for guiding the development of high-quality flame-retardant multifunctional fabrics.

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    Radiative cooling nanofiber medical fabrics and sensor system integration
    WU Qinxin, HOU Chengyi, LI Yaogang, ZHANG Qinghong, QIN Zongyi, WANG Hongzhi
    Journal of Textile Research    2021, 42 (09): 24-30.   DOI: 10.13475/j.fzxb.20210300607
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    Traditional medical protective clothing offers limited functions and lacks of wear comfort. Accordingly, this research focused on the preparation of radiative cooling silicon dioxide/poly(1,1-difluoroethylene) nanofibers through electrospinning, and the making of nonwoven fabrics using hot pressing to obtain a new protective clothing fabrics (SiO2/PVDF-NWF). The microstructure and infrared transmittance of SiO2/PVDF nanofibers were measure and characterized, and the wearing comfort, protection performance, and radiative cooling effect of the as-obtained SiO2/PVDF-NWF were tested. The results show that with 15% PVDF spinning solution, optimal infrared transmittance of SiO2/PVDF nanofibers is achieved when the SiO2 particle size is 2 μm and the mass ratio of SiO2/PVDF is 0.15. The temperature inside clothes was found 2 ℃ lower than that in the traditional protective clothing and the relative humidity was reduced by 5% after replacing part of the fabric on the traditional protective clothing with SiO2/PVDF-NWF. In addition, the multifunctional protective system is constructed by integrating sensors for blood oxygen, temperature, humidity and positioning on the radiative cooling protective clothing fabrics, offerring a broad application prospect for medical applications.

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    Research progress on application of aerogel materials in firefighting clothing
    JIANG Lulu, DENG Meng, WANG Yunyi, LI Jun
    Journal of Textile Research    2021, 42 (09): 187-194.   DOI: 10.13475/j.fzxb.20200800108
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    In order to pursue the application of aerogel materials in the field of firefighting clothing, improve the comprehensive wearability of firefighting clothing, and promote the development of new types of firefighting clothing, advantages and disadvantages of using aerogel materials in firefighting clothing were evaluated based on research findings reported in recent years. The thermal properties of aerogel materials were discussed, including thermal insulation performance and thermal stability. The literatures were reviewed from two aspects, i.e. aerogel used as coating materials and that directly embedded in multi-layer fabric systems. The application and research status of the firefighting clothing were summarized, and the thermal protection performance and comfort performance of thermal and moisture of aerogel-type firefighting clothing were also analyzed. The problems in the application process of aerogel materials are categorised, and the future application direction of the aerogel materials forecasted. Balance between thermal protection and thermal comfort, the improvement of aerogel mechanical properties and thermal stability, and the development and application of aerogel composites are forecasted as the research directions in the future.

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    Key technologies supporting low-carbon emissions in dyeing and finishing of textiles
    JI Bolin, WANG Bijia, MAO Zhiping
    Journal of Textile Research    2022, 43 (01): 113-121.   DOI: 10.13475/j.fzxb.20210910209
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    In order to understand clearly the technological breakthrough and current situation of the dyeing and finishing industry for low-carbon emission and to discover the technological advance and developing trend, this paper reviews the related technologies and research progress. It started by introducing energy-saving and emission-reducing technologies, smart functional textiles, advanced green dyeing and finishing equipment and systems, and wastewater treatment and recycling, as well as the technical performance and their effects on the low-carbon emissions. Recent years have witnessed an explosion of technological breakthroughs in the traditional processing methods, and the textile industry has kept pace with the cutting-edge techniques such as the smart temperature-regulating clothing. Through multi-dimensional efforts, it will benefit to promote the continuous technological innovation, enhance the industrial value, and reduce the environmental impact. The review concluded that the dyeing and finishing industry can achieve the green and low-carbon circular economic development, and contribute to our country's goal of peaking carbon dioxide emission and reaching carbon neutrality.

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    Preparation and study of pure biomass cellulose aerogels for flame retardancy
    LUO Xiaolei, LIU Lin, YAO Juming
    Journal of Textile Research    2022, 43 (01): 1-8.   DOI: 10.13475/j.fzxb.20210907508
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    In order to recycle textiles and enhance the green and low-carbon circular development, regenerated cellulose aerogels were prepared from waste cotton yarns, and the biomass tea polyphenol extracted from agricultural and forestry waste was deposited on the aerogel surface under the driving of water environment. The flame retardant cellulose aerogel (BTCA) was developed for pure biomass energy saving and heat preservation. The flame retardancy, thermal stability, thermal decomposition vapor and solid products, and flame retardant mechanism of BTCA were studied and analyzed by limiting oxygen index method, thermogravimetric analysis, thermogravimetric infrared spectroscopy and Raman spectroscopy. Because the biomass tea polyphenol deposits have an excellent antioxidant capacity, it can promote the dehydration and carbonization of cellulose molecular chain at the same time. Based on this, solid-phase flame retardant was achieved, and their thermal stability has been significantly improved. The limit oxygen index was as high as 32.7% and the cellulose aerogel could self-extinguish when leaving the flame.

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    Research progress of artificial spider silk and imitation spider silk fiber
    WANG Songli, WANG Meilin, ZHOU Xiang, LIU Zunfeng
    Journal of Textile Research    2021, 42 (12): 174-179.   DOI: 10.13475/j.fzxb.20210905206
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    Spider silks have been received much attention from researchers due to their excellent mechanical properties and good biocompatibility. Different from the silk, the spider silk is difficult to be commercially produced in a large scale, as the spiders kill each other in large-scale breeding. Therefore, the development of artificial spider silk and imitation spider silk fibers have become an effective method to solve the above problems. In order to better understand the nature of the strength and toughness of spider silk, the structure of nature spider silk was reviewed, including the primary and β-crystal network (nanofibril) structure and formation process. The progress in the preparation of artificial spider silk and imitation spider silk fibers, including polypeptides, recombinant spider fibrous protein, polymer materials and carbon nanotube yarns and other materials was introduced, which provided reference for further reaearch and large-scale preparation of artificial spider and imitation spider fiber.

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    Research progress in wearable plantar pressure monitoring system
    CHEN Zujiao, ZHANG Rui, ZHUO Wenwen, ZHANG Longlin, ZHOU Li
    Journal of Textile Research    2021, 42 (09): 31-38.   DOI: 10.13475/j.fzxb.20200806008
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    Aiming at the promotion of wearable plantar pressure monitoring techniques, physiological structure of human foot, source of plantar pressure and walking frequency were introduced. According to the current research status of wearable plantar pressure monitoring systems, materials and working principles of integrative pressure monitoring socks based on fabric sensor were reviewed, and information transfer module and working principles of composite pressure monitoring shoes based on flexible electronic sensor were also scrutinized. The selection principle of feature points used in wearable plantar pressure monitoring systems and its use for detecting falls, foot disease diagnosis and plantar pressure database establishment were described. The problems were pointed out in poor material performance and short wireless transmission distance in the industrialization process, based on which an application proposal with improved performance based on biomechanics, textile materials and electronic communication was put forward for future development.

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    Research progress of green and low-carbon knitting technology
    JIANG Gaoming, ZHOU Mengmeng, ZHENG Baoping, ZHENG Peixiao, LIU Haisang
    Journal of Textile Research    2022, 43 (01): 67-73.   DOI: 10.13475/j.fzxb.20211000607
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    With the introduction of various environmental protection policies, strengthening the concept of sustainable green and low-carbon knitting technology becomes imperative in the whole production process by reducing energy consumption and environmental pollution from knitting processes. Considering every step in the knitting process from fabric design to selecting fiber raw material, preparing and forming fabric, green low-carbon knitting technology will reduce energy consumption and pollution in the production process. On this basis, this paper discusses principally the impact of technological innovation on energy conservation and emission reduction in five areas including production technology of short-flow knitting products, the technology of dye-free knitting jacquard, reinforcing technology of lightweight knitting structure, production technology of low energy knitting equipment, and virtual reality technology of pattern-free knitting. It is recommended to further promote the application of green and low-carbon knitting technology and build a green and low-carbon cycle development system for the knitting industry.

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    Progress in application of photodynamic antibacterial technology for textiles
    WANG Zhihui, XU Yufei, GUO Haoyu, ZHANG Kanglei, PANG Xingchen, NIE Xiaolin, ZHUGE Jian, WEI Qufu
    Journal of Textile Research    2021, 42 (11): 187-196.   DOI: 10.13475/j.fzxb.20200903610
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    In order to study the antibacterial effect of photosensitizers loaded on textile materials and the possibility of its application for textile modifications, the research background of photodynamic antibacterial, types of photosensitizers, current applications of antibacterial textiles, and photosensitizers were systematically reviewed. The commonly used loading forms of the drug are examined, and the conclusions and future prospects are summarized. The review indicates that photodynamic antibacterial textiles are a new type of antibacterial material that can be effectively sterilized and has a good development prospect. The improved loading method through chemical covalent bonding of photosensitizers can solve the problems of poor binding fastness and poor reusability associated with the commonly used loading methods, and can further broaden the research and development path of antibacterial materials. At the same time, it is realized that the current photosensitizers have not been able to control accurately their photosensitizing antibacterial properties. Future research should control the photosensitive antibacterial properties by controlling the types of photosensitizers and the concentration of photosensitizers.

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    Analysis of new five-element-integration spinning technology based on human-machine-material-method-environment for carbon neutralization
    XIA Zhigang, XU Ao, WAN Youshun, WEI Jiang, ZHANG Huixia, TANG Jiandong, ZHENG Minbo, GUO Qinsheng, DING Cailing, YANG Shengming, XU Weilin
    Journal of Textile Research    2022, 43 (01): 58-66.   DOI: 10.13475/j.fzxb.20210909310
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    Conventional spinning process is characterized by its long scattered processes and labor intensiveness, causing problems such as high energy consumption per unit production, poor product consistency, and high operating cost. In addition, multiple-type-fiber spinning leads to difficulty in fiber recycling from raw materials and resultant products. As an effort to achieve the goal of carbon peaking in 2030 and carbon neutrality in 2060, this paper establishes a low-carbon spinning strategy as carbon neutralization spinning by integrating human-machine-material-method-environment. In specific, the intensive, simple and the extensive types of low-carbon spinning technologies were analyzed. The analysis results show that after comparison with conventional ring spinning, the intensive intelligent technology achieves low-carbon and high-quality spinning by reducing operation costs by 32.67%, production energy consumption per unit by 17.5%, and product defect rate by 61.54%, effectively addressing the problems in the spinning sector. The simple type can shorten or eliminate steps in the spinning process, achieves spinning speed as high as 550 m/min, realizing the goal of efficiency-improvement and emission-reduction. The extensive type spinning develops a front-end raw material functional recycling to change waste into treasure, reducing energy and emission. The extensive type also develops medium-end carbon-nesting spinning to produce green functional yarns, and resultant manufacturing technology can be used for producing cooling, heat-insulting functional yarns for green terminal textiles.

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    Research progress of antibacterial materials for textiles and their applications
    ZHAI Lisha, WANG Zonglei, ZHOU Jingyi, GAO Chong, CHEN Fengxiang, XU Weilin
    Journal of Textile Research    2021, 42 (09): 170-179.   DOI: 10.13475/j.fzxb.20201000910
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    With the advancement of science and technology and the improvement of people's living standards, especially when combating the further spread of SARS-CoV-2 in the world, higher requirements for functional antibacterial textiles have to be put forward. This paper reviews the common antibacterial materials and their anti-bacterial mechanisms and the research progress in antibacterial finishing agents in the textile field. The development direction of antibacterial finishing agents and antibacterial textiles were recommended in four aspects: the selectivity and efficiency of antibacterial finishing agents, the safety of antibacterial textiles, the wearability and durability of antibacterial textiles, and the hysteresis and standardization of antibacterial textile testing standards, in order to provide theoretical basis for the development of antibacterial textiles and upgrade the functional antibacterial textiles.

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    Application progress of two-dimensional transitional metal carbon/nitrogen compound composite in field of intelligent wearable textiles
    RONG Kai, FAN Wei, WANG Qi, ZHANG Cong, YU Yang
    Journal of Textile Research    2021, 42 (09): 10-16.   DOI: 10.13475/j.fzxb.20210203507
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    In view of the difficulty of traditional fibers in meeting the demand of current intelligent wearable devices, most existing composite fibers do not offer the appropriate electrical conductivity, mechanical properties, or energy storage capacity, this paper reviews the research progress in new two-dimensional transitional metal carbon/nitrogen compound (MXene) composite fibers used for intelligent wearables. Various preparation methods of MXene composite fibers (coating, double roll, electrospinning and wet spinning) were introduced, and the advantages as well as disadvantages of each method were analyzed. The applications of MXene composite fibers in electromagnetic shielding, supercapacitors, flexible sensors and other fields were systematically summarized. This paper also prospected the future development of MXene fibers in the field of intelligent wearable devices, providing new ideas for the research new generation of composite fibers with high electrical conductivity, excellent mechanical properties and high energy storage.

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    3-D virtual try-on technique based on dynamic feature of body postures
    LI Bowen, WANG Ping, LIU Yuye
    Journal of Textile Research    2021, 42 (09): 144-149.   DOI: 10.13475/j.fzxb.20201200406
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    Aiming at the dynamic perception of personalized postures and the tracking and matching of human body's posture by clothing modeling, this paper established the hierarchical 3-D clothing skeleton points model based on two types of the motion features of the human postures, distinguishing the trunk (global) from the limbs (local), and integrating the clothing model with the body circumferencial features extracted using Kinect camera. In parallel, the global-local singular value decomposition algorithm (GL-SVD) was designed to hierarchically control the deformation of 3-D clothing skeleton model cooperatively. The results from virtual try-on test system show that relative tracking error of the new method is reduced by about 10%, the real-time tracking accuracy and matching precision between the clothing model and the human body is obviously improved. This new technique supports the complex posture (such as leg lifts, lunges) trying-on scenarios of various clothing types such as skirts, pants, tops, and more.

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    Research progress in resource recycling based on waste textiles
    HAN Fei, LANG Chenhong, QIU Yiping
    Journal of Textile Research    2022, 43 (01): 96-105.   DOI: 10.13475/j.fzxb.20210901510
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    With aim to achieve the recycling of waste textiles and promote the construction of closed-loop system of textile industry chain, the conventional recycling framework of waste textiles was summarized based on the existing achievements. The resource recycling methods including primary recycling, physical recycling and chemical recycling were examined, and the advantages and disadvantages of each recovery process were discussed. At the same time, the research progress in the recycling process of single component fiber such as cellulose fiber, polyester fiber, protein fiber, and the typical blended textiles were described. Furthermore, the research progress in the preparation of functional materials based on waste textiles, and their applications in fields such as sound insulation materials, foam materials, solar evaporation and capacitive materials were introduced. Finally, the review pointed out that the comprehensive evaluation system of waste textiles is the key to increase speed and improve quality of resource recycling and to achieve industrial production.

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    Research progress and prospect on biodegradable polylactic acid-based melt-blown nonwovens
    ZHU Feichao, ZHANG Yujing, ZHANG Qiang, YE Xiangyu, ZHANG Heng, WANG Lunhe, HUANG Ruijie, LIU Guojin, YU Bin
    Journal of Textile Research    2022, 43 (01): 49-57.   DOI: 10.13475/j.fzxb.20210910009
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    Polylactic acid-based(PLA-based)melt-blown nonwovens have drawbacks such as insufficient flexibility, low heat-resistant temperature, poor electret durability, and single functionality, which limit their development and applications as high-performance adsorption and filtration materials. This paper comprehensively reviewed the research progress of PLA-based melt-blown nonwovens focusing on raw material design, processing and applications. It introduced the processing and molding methods of PLA-based melt-blown nonwovens, explored the modification of PLA-based melt-blown materials, including masterbatch modification (copolymerization/block, enhanced toughening, functional modification, etc.) and finishing modification (durable electret and functional finishing). The typical applications of PLA-based melt-blown nonwovens in the fields of air filtration, medical protection, health care, tissue engineering, cleaning and wiping, oil absorption and warmth are explained. The development trends of PLA-based micro-nano scale melt-blown fiber, multi-component, composites, durable electret, function and intelligence are prospected, so as to provide theoretical and technical reference for development of PLA-based melt-blown nonwovens with high quality and high value.

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    Preparation and properties of cellulose/calcium alginate blend fiber
    CHEN Zihan, YAO Yongbo, SHENG Junlu, YAN Zhiyong, ZHANG Yumei, WANG Huaping
    Journal of Textile Research    2021, 42 (12): 15-20.   DOI: 10.13475/j.fzxb.20210204706
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    In order to reduce the flammability of cellulose fibers, ionic liquid 1-allyl-3-methylimidazole chloride ([AMIM]Cl) was used as co-solvent for cellulose and alginic acid. Then, the cellulose/calcium alginate blend fiber was prepared with calcium chloride solution as the coagulation bath by dry-jet wet spinning. The effect of cellulose/calcium alginate blend ratio on the structure and properties of the fibers were studied. The results show that the cross-section of the blend fibers is dense, and the hydrogen bond interactions exist between cellulose and calcium alginate molecules. Despite the fact of the mechanical strength of the blend fibers decreases with the increase of calcium alginate content, the tensile strength reaches 123 MPa when the content of calcium alginate is 30%, and the self-extinguishing time from fire of this fiber is only 1.1 s, indicating excellent self-extinguishing property. In addition, the moisture regain of cellulose/calcium alginate blend fibers is 7.33%-7.75%, representing good hygrophilic property and wearability for regenerated cellulose fibers.

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    Influence and mechanism of clothing color illusion on figure perception
    LU Cheng, MAO Jiaying, SHEN Jiayi
    Journal of Textile Research    2021, 42 (10): 132-138.   DOI: 10.13475/j.fzxb.20201100307
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    In order to improve the combination effect of clothing and human body by using visual illusion, a group of experiments were carried out on color saturation and lightness under various hue conditions to measure consumers' arousal, attention, figure perception and purchase intention under different conditions. Analysis of variance and regression analysis were used to discuss the influence of color saturation and lightness on figure perception, as well as the mediating effects of arousal and attention. The results show that the figure perception of high color saturation clothing is fatter than that of low saturation clothing, and the figure perception of high brightness clothing is fatter than that of low brightness clothing. However, the these former two effects have no significant difference on consumers' purchase intention, and the arousal and attention played a mediating role in the influence of saturation on figure perception. Specifically, high color saturation would lead to high arousal level and attract more attention, thus resulting in a fatter figure perception. However, this mediating effect was only significant for the solid color clothing, not for striped clothing.

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    Research and application progress in fire retardant fabric based on polymeric hydrogel
    YU Zhicai, LIU Jinru, HE Hualing, MA Shengnan, JIANG Huiyu
    Journal of Textile Research    2021, 42 (09): 180-186.   DOI: 10.13475/j.fzxb.20200804707
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    In order to improve the fire resistance of textiles, this paper reviews the application of hydrogels as a new type of fire retardant materials, because of the high absorbability of hydrogels with a three-dimensional network. Moreover, the fire-retardant mechanism of hydrogels such as endothermic cooling, gas dilution and oxygen isolation in the process of fire extinguishing was systematically described. According to relevant literature, the novel treatment technology of composite flame-retardant fabric was discussed. It was summarized that flame retardant composite fabrics based on hydrogel have excellent flame-retardant property. This paper critically reviewed and analyzed the challenges and opportunities of hydrogels as flame retardant materials in the field of textile thermal protection. It is found that improving the binding fastness between hydrogels and fabrics, developing self-healing flame retardant hydrogel materials and multifunctional flame retardant hydrogel fabrics call for further research.

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    Style similarity algorithm based on clothing style
    JIANG Hui, MA Biao
    Journal of Textile Research    2021, 42 (11): 129-136.   DOI: 10.13475/j.fzxb.20201207808
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    In order to calculate accurately the similarity between clothing images so as to meet the cross-scene needs of more users searching for clothing matching images for purchasing similar clothing, the influencing factors of clothing styles were investigated based on clothing styles constructed according to quantitative standards. The feature model of styles was established to further analyze the shortcomings of existing clothing attribute recognition algorithms, and was used to identify styles based on deep learning. The features of clothing styles were depicted through constructing a residual network model that integrates transfer learning. The experimental results show that the precision of the model on clothing style features is close to 90%, and the overall accuracy reaches 80%. Compared with the traditional image similarity methods, the accuracy of the image similarity calculation based on clothing styler is higher.This research also provides new ideas for personalized clothing recommendation.

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    Preparation and microstructure control of aerogel fibers based on aramid nanofibers
    CHEN Xian, LI Mengmeng, ZHAO Xin, DONG Jie, TENG Cuiqing
    Journal of Textile Research    2021, 42 (11): 17-23.   DOI: 10.13475/j.fzxb.20201102007
    Abstract240)   HTML26)    PDF(pc) (4094KB)(141)       Save

    In order to further improve the mechanical strength of aerogel fibers, the dispersion solution of aramid nanofibers was prepared with para aramid fiber as raw materials, and aerogel fibers based on aramid nanofibers were fabricated via wet spinning, solvent displacement and following freeze-drying processes. The microstructures of aerogel fibers based on aramid nanofibers were also adjusted by changing the percentage of tertiary butyl alcohol and water in the solvent replacement bath. The results showed that the change of solvent replacement bath could give the aerogel fibers good formability. When the volumetric ratio of tert-butanol to water in the solvent replacement bath was 1∶1, the aerogel fiber had a fluffy network structure in the interior,its specific surface area reached 165.4 m2/g and the fracture strength was 4.8 MPa. With the increase of water content, the specific surface area of aerogel fibers decreased with enhanced the mechanical strength. When only water was used as the solvent replacement solution, the aramid nanofibers were neatly orientated in the fiber length direction, and the fracture strength of aerogel fibers reached 328.7 MPa.

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    Progress in preparation and application of aromatic polyamide separation membrane
    LAI Xing, WANG Chun, XIAO Changfa, WANG Liming, XIN Binjie
    Journal of Textile Research    2021, 42 (10): 172-179.   DOI: 10.13475/j.fzxb.20201203808
    Abstract239)   HTML15)    PDF(pc) (2219KB)(64)       Save

    In order to better understand the research status of aromatic polyamide separation membrane materials which can be used in special separation field, this paper reviewed the research progress of porous membrane materials with aromatic polyamide as membrane-forming polymer at home and abroad in recent years, and reviewed the preparation methods and characteristics of aromatic polyamide porous membrane at present stage. In addition, it was analyzed that the application of aromatic polyamide porous membrane is suitable for wastewater treatment, air filtration, lithium ion battery separator and fiber reinforced membrane. Finally, the shortcomings of the porous membrane of aromatic polyamide were spelt out, and the application prospect and development direction of the porous membrane of aromatic polyamide were prospected, so as to provide reference for the realization of low energy consumption, high efficiency preparation and high value utilization of aromatic polyamide porous membrane.

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    Trend of environmental governance in textile industry aiming at carbon neutrality and emission reduction
    TANG Zhengkun, LIU Yanbin, XU Chenye, LIU Yanbiao, SHEN Chensi, LI Fang, WANG Huaping
    Journal of Textile Research    2022, 43 (01): 131-140.   DOI: 10.13475/j.fzxb.20210909010
    Abstract238)   HTML12)    PDF(pc) (8353KB)(92)       Save

    In the face of global fossil energy tightening, excess greenhouse gas emissions and severe water pollution control situation, reducing pollution and carbon emission is extremely urgent. As a traditional pillar industry in China, the development of textile industry constitutes as an important route for achieving the low-carbon green industry. In this review, this paper firstly analyzed the units of energy consumption and pollution emissions from the whole production chains. The main links of carbon emission and potentials for carbon reduction in the process of textile raw material, dyeing and finishing and finished product were dissected in details, and the cutting-edge technologies for the carbon reduction pollution control and resource recycling were summarized. Finally, based on exemplar case of Binhai Industrial Park in textile industry cluster in Keqiao District, Shaoxing City, the positive effect of industrial agglomeration on industrial carbon reduction was discussed from the perspective of environmental management. The future goals of pollution control and carbon reduction can only be achieved by the improvements in system, technology and management.

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    Research progress in fibrous materials for interfacial solar steam generation system
    GE Can, ZHANG Chuanxiong, FANG Jian
    Journal of Textile Research    2021, 42 (12): 166-173.   DOI: 10.13475/j.fzxb.20201007508
    Abstract229)   HTML15)    PDF(pc) (7163KB)(105)       Save

    Aimed at the alleviation of the increasingly scarce of fossil energy and the shortage of fresh water resources, and promote development and application of fibrous materials in the utilization of water resources, latest research progress in the interfacial solar steam generation system using fibrous materials was reviewed. This paper started by introducing the main principles, development history and the applications of interfacial solar steam generation system. The photothermal conversion materials and auxiliary materials in the interfacial solar steam generation system were reviewed and analyzed respectively. Based on their functions, the advantages of the fibrous materials such as diversified functions, light weight, low cost and ease of processing were elaborated, demonstrating fibrous materials' excellent performance as the main raw materials for the interfacial solar steam generation system. This paper concluded with an outlook on the challenges in using fibrous materials for the interfacial solar steam generation system and possible solutions to improve the practicality of the system. It is anticipated that this review paper can benefit the widespread applications of fibrous materials in interfacial solar steam systems.

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    Mechanical properties of carbon fiber/polypropylene/polylactic acid reinforced composites
    SONG Xueyang, ZHANG Yan, XU Chenggong, WANG Ping, RUAN Fangtao
    Journal of Textile Research    2021, 42 (11): 84-88.   DOI: 10.13475/j.fzxb.20201004005
    Abstract224)   HTML19)    PDF(pc) (2696KB)(75)       Save

    In order to reduce the content of polypropylene (PP) in carbon fiber/PP composites and reduce the environmental degradation pressure without changing the mechanical properties of carbon fiber/PP composites, the carbon fiber/PP composite resin system was doped with degradable polylactic acid (PLA) to form a blended resin system, and the carbon fiber reinforced blended resin composites were prepared by hot pressing. The effects of the mass ratio of PLA toPP blends on the impact, bending and tensile properties of the composites were investigated. The results show that with the increase of mass fraction of PLA in resin system, the impact and bending strength of carbon fiber composites decrease first and then increase, while the tensile strength increases first and then decreases. When the PLA mass fraction is 60%, the impact strength and flexural strength of the composites are the highest at 21.8 kJ/m2 and 112.5 MPa, and the tensile strength is 37.2 MPa, which has the optimal comprehensive physical and mechanical properties, which is similar to the mechanical properties of the composites without PLA.

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    Thermo-sensitive hydrophilic-hydrophobic transition and moisture permeability of poly-N-isopropylacrylamide/polyurethane gradient composite membrane
    YANG Qun, LIANG Qi, WANG Liming, DAI Zhengwei
    Journal of Textile Research    2021, 42 (09): 17-23.   DOI: 10.13475/j.fzxb.20210201708
    Abstract219)   HTML14)    PDF(pc) (13107KB)(265)       Save

    To improve the temperature-sensitivity and moisture permeability of intelligent waterproof and moisture permeable membrane, poly-N-isopropylacrylamide (PNIPAM) was coated on hierarchical pore polyurethane (PU) membranes and PNIPAM/PU gradient composite membranes were prepared by adjusting the mass fraction of PNIPAM. Structure, thermo-sensitive hydrophilic-hydrophobic and thermo-sensitive moisture permeability were investigated. The results show that the construction of PNIPAM does not change the hierarchical pore structure. It has thermo-sensitive hydrophilic-hydrophobic transition properties, exhibiting hydrophilicity when temperature below the transition temperature (30 ℃), and hydrophobicity when temperature above this temperature. Meanwhile, the introduction of PNIPAM improves thermo-sensitive moisture permeability, from 4 843.4 g/(m2·24 h) of PU to 6 398.3 g/(m2·24 h) of PNIPAM/PU gradient composite membrane at 50 ℃ when mass fraction of PNIPAM is 6%. It was also found that the higher the content of PNIPAM, the more significant decrease in swelling property with the temperature increase.

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    Analysis on cross-sectional structure of moso bamboo using three-dimensional microscope imaging
    CHEN Hainiao, TIAN Wei, JIN Xiaoke, ZHANG Hongxia, LI Yanqing, ZHU Chengyan
    Journal of Textile Research    2021, 42 (12): 49-54.   DOI: 10.13475/j.fzxb.20201208206
    Abstract216)   HTML12)    PDF(pc) (4823KB)(55)       Save

    In order to study the characteristics and distribution of the cross-sectional structure of moso bamboo, X-ray three-dimensional microscope was used to study the vascular bundle and the parenchyma cell structure of the basic tissue of moso bamboo, and the distribution rules of the long and short axis, area, volume fraction and parenchyma cell area of the vascular bundle were analyzed. The results showed that from the outside to the inside of the cross-section of moso bamboo, the vascular bundle long axis gradually decreased, the short axis gradually increased, and finally the long and short axis tended to be the same. After that, the vascular bundle area gradually increased, and the volume fraction gradually decreased. The adjacent center wheelbase increased, and the area of a single parenchyma cell gradually decreased. On the whole, the cross-section of moso bamboo demonstrated a gradient change. Inspired by the gradient change of bamboo cross-section, the gradient change could be applied to the engineering of bionic composites for specific properties. The gradient change of the overall structure of biomimetic composites can be realized by changing the distribution of fiber and resin. When it is applied to the design of biomimetic composites, the research of biomimetic fiber composites can be carried out.

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    Progress in biomass fiber medical dressings
    WU Yang, LIU Fangtian, CAO Mengjie, CUI Jinhai, DENG Hongbing
    Journal of Textile Research    2022, 43 (03): 8-16.   DOI: 10.13475/j.fzxb.20211200109
    Abstract215)   HTML23)    PDF(pc) (1495KB)(155)       Save

    In view of the problems of easy infection and secondary injury of current traditional medical dressings in wound care, this paper reviews the good hygroscopicity, bacteriostasis and certain biological activity of some biomass fibers, the advantages of biomass fibers as medical dressings are introduced, considering the natural biodegradability, biocompatibility and non-toxicity of biomass raw materials. By briefly summarizing the preparation methods of different biomass fibers for medical dressings, the suitable biomass fibers for the customized treatment of different wounds are proposed. The research progress of various biomass fiber medical dressings achieved in recent years are reviewed, including their functional applications in antibacterial and anti-inflammatory, drug delivery, exudate management, and tissue replacement medical dressings. The existing problems and future development directions of biomass fiber medical dressings are discussed.

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    Journal of Textile Research    2021, 42 (09): 203-203.  
    Abstract213)      PDF(pc) (1280KB)(59)       Save
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    Determination and application of air gap parameters in coverall fit analysis
    WANG Shitan, WANG Xiuhua, WANG Yunyi
    Journal of Textile Research    2021, 42 (09): 137-143.   DOI: 10.13475/j.fzxb.20201102208
    Abstract213)   HTML15)    PDF(pc) (8248KB)(113)       Save

    This study was to quantify the interaction between human body and coverall garments, aiming to create a quantitative index for clothing fit analysis. Naked and clothed human bodies were scanned with 7 postures using a 3-D body scanner. 22 air gap parameters were extracted by 3-D scanned image analysis, from which 9 typical parameters were determined. An evaluation equation of clothing fit based on the typical air gap parameters was finally built using factor analysis. The results indicate that the newly proposed fit evaluation equation offers satisfactory evaluation effect. In addition, it is observed that arm lifting and bending postures would significantly reduce the air gap compared to the standing posture. In particular, the more complex the postures, the wider the range of influence; for instance for arm lifting and bending postures the crotch length decreased about 64%. Chest and back, hip and crotch and leg were identified as the primary regions influencing coverall fit.

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    Technology progress and application prospect of non-aqueous medium dyeing systems
    PEI Liujun, SHI Wenhua, ZHANG Hongjuan, LIU Jinqiang, WANG Jiping
    Journal of Textile Research    2022, 43 (01): 122-130.   DOI: 10.13475/j.fzxb.20210909909
    Abstract212)   HTML31)    PDF(pc) (8205KB)(136)       Save

    In order to achieve dyeing of hydrophilic fibers such as cotton textile with reactive dyes with salt-free, high fixation rate and zero sewage discharge, the problems call for urgent attention in traditional water base were firstly reviewed and analyzed. As the second step review, the less water/water-free dyeing technologies were summarized. The results revealed that these new dyeing technologies of reactive dyes have yet solved the problems of large water consumption and large discharge of wastewater. On this basis, the reactive dyeing in silicone non-aqueous dyeing system was reviewed, including the definition and serviceability of dyeing in non-aqueous medium, the basic requirements of dyeing medium, and further introduced the concept of non-aqueous medium dyeing. The applicability and basic requirements of the medium, the dyeing performance of cotton fiber in non-aqueous medium dyeing system, and the industrialization development were introduced. Finally, the dyeing technology of non-aqueous medium was summarized and prospected. It is believed that the key technology of non-aqueous dyeing would not only solve the problems of high pollution and high emission of cotton textile dyeing, but also the energy consumption and cost of dyeing have been further reduced. This dyeing technology is expected to change the image of serious environmental pollution in the traditional dyeing industry, and to lead to a clean production and sustainable development for textile dyeing.

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    Research progress of polymer embolic microspheres
    LI Feng, YANG Jiahao, LAI Gengchang, WANG Jiannan, XU Jianmei
    Journal of Textile Research    2021, 42 (10): 180-189.   DOI: 10.13475/j.fzxb.20200702810
    Abstract209)   HTML17)    PDF(pc) (1502KB)(91)       Save

    In order to promote the embolic polymer microspheres towards the direction of a higher drug-loading rate, controlled drug release, functionalization. Mechanism of embolic microspheres were reviewed, as well as the application of the polymer such as chitosan and alginate in the drug microspheres preparation. The embolic microsphere preparation methods such as emulsification cross-linking method, and ionic gelation method were introduced, as well as the different preparation characteristics of drug loaded microspheres for water-soluble and lipid-soluble drugs. Finally it is pointed out that the drug loading rate of the microspheres can be improved by selecting suitable carrier materials or multiple composite materials, so that the drug can be released in a controlled manner; suitable preparation methods of microspheres were selected to achieve high drug loading rate according to the characteristics of the loaded drugs; the future studies on embolic microspheres should be developed in the direction of multifunctionalization, such as microspheres with load targeted chemotherapy drugs, microspheres with targeting properties, microspheres that alleviate embolic pain or cancer pain, microspheres with photothermal effect, microspheres with controllable degradation rate, etc., providing reference and support for promoting the research and application of embolic microspheres in the treatment of tumors.

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    Research progress in warp-knitted meshes for tackling complications after hernia repair
    QIAO Yansha, MAO Ying, XU Danyao, LI Yan, LI Shaojie, WANG Lu, TANG Jianxiong
    Journal of Textile Research    2022, 43 (03): 1-7.   DOI: 10.13475/j.fzxb.20211109707
    Abstract207)   HTML38)    PDF(pc) (934KB)(104)       Save

    In view of the multiple complications caused by synthetic meshes implanted for hernia repair, a literature review was carried out and it revealed that the triggering factors of complications are the pollution from the pathogenic bacteria and the foreign body reaction from the mesh. Regarding the commonly used warp-knitted mesh, the present treatments were divided into the warp-knitted structure adjustment and the surface modification. According to the different scenarios (bacterial or aseptic inflammation) and occasions (intraperitoneal or extraperitoneal), the surface modifications were classified and explained. The progress in related researches and clinical commercial meshes in recent years were scrutinized, and summarized three types of modified meshes (anti-bacterial, anti-adhesion, anti-inflammation) were summarised. By outlining the corresponding mechanisms and effects on complications, this paper pointed out the current problems of these types of modified meshes and concluded that the high-value warp-knitted mesh is the future development direction.

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    Research progress of image processing technology for fabric defect detection
    LÜ Wentao, LIN Qiqi, ZHONG Jiaying, WANG Chengqun, XU Weiqiang
    Journal of Textile Research    2021, 42 (11): 197-206.   DOI: 10.13475/j.fzxb.20200702710
    Abstract206)   HTML25)    PDF(pc) (1439KB)(182)       Save

    With the enhancement of product quality requirements in the textile industry and the limitations of traditional defect detection methods, the automatic detection of fabric defects based on image processing technology has seen an rapidly development. Compared with traditional technology, the application of image processing technology improves the processing efficiency and realizes the digitization and intelligent manufacturing of the textile industry. This paper introduces the preprocessing technology of fabric images, and summarizes the mainstream methods of fabric defect detection, including structure-based methods, statistics-based methods, spectrum-based methods, model-based methods and learning-based methods. In addition, it reviews the principles of these methods, and examines their advantages and disadvantages and scope of applications. Besides, the paper introduces the existing finished equipment and compares the advantages and disadvantages of these equipment. Difficulties facing the existing image processing technology in the application of the textile industry are analyzed, and prospects of future development are discussed.

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    Analysis on factors influencing solution of Lyocell fiber spinning pulp
    PAN Yile, QIAN Liying, XU Jigang, HE Beihai, LI Junrong
    Journal of Textile Research    2021, 42 (10): 27-33.   DOI: 10.13475/j.fzxb.20201201207
    Abstract205)   HTML13)    PDF(pc) (5563KB)(71)       Save

    In order to explore the factors affecting the solubility of Lyocell fiber spinning pulp, four different dissolving pulps were analyzed to study the influence of their chemical composition, crystallinity, degree of polymerization and fiber morphology on the solubility of dissolving pulp in N-methylmorpholine-N-oxide (NMMO). The results showed that the dissolution of pulp experienced the suspension stage, swelling stage and dissolution stage. The higher the proportion of non-uniform swelling of fibers in the swelling stage, the longer the dissolution time. When the pulp quality meets the raw material standard for preparing Lyocell fiber, the trace lignin on the fiber surface plays a major role in dissolving the pulp. Lignin is deposited on the surface of the fiber through adsorption, and is combined with cellulose through hydrogen bonds to weaken fiber swelling. At the same time, hydrophobic lignin hindered the penetration of NMMO into the fiber and increased the dissolution time.

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    Preparation and properties of single-layer and parallel silk fibroin fiber patterns with cell adhesion contrast properties
    GU Zhanghong, YAO Xiang, WANG Jinsi, ZHANG Yaopeng
    Journal of Textile Research    2022, 43 (05): 1-6.   DOI: 10.13475/j.fzxb.20211109306
    Abstract204)   HTML53)    PDF(pc) (5101KB)(121)       Save

    Aiming at the interference of various background adhesion when investigating the influence of fiber characteristics on cell behavior, a substrate with anti-cell adhesion property was obtained by grafting of oligo-ethylene glycol silylation reagent on the surface of glass. The parallel single-layer silk fibroin (SF) fibers with cell adhesion property were prepared using wet spinning technology on the surface of the substrate, and the two ends of SF fibers were fixed on modified substrate by polydimethylsiloxane to prepare single-layer and parallel arranged fiber patterns. The diameter, surface morphology, structural component of SF fibers and fiber spacing in the constructed fiber patterns were characterized, and L929 was taken as an example to verify corresponding cell adhesion contrast properties of the constructed fiber patterns. Results show that the SF fibers with different diameters present similar morphological features and secondary structure contents. After cell seeding, the cells can only adhere to the surface of SF fibers, but not to the background substrate, confirming excellent cell adhesion contrast properties of the fiber patterns.

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    Melt polycondensation and kinetics of phosphorus containing flame retardant copolyesters
    WAN Suying, BAO Jianna, WANG Ying, ZHANG Xianming, CHEN Shichang, YANG Zhichao, SHI Jiaoxue, CHEN Wenxing
    Journal of Textile Research    2021, 42 (11): 9-16.   DOI: 10.13475/j.fzxb.20210101008
    Abstract200)   HTML31)    PDF(pc) (2886KB)(121)       Save

    In order to study the influencing factors for melt polycondensation of high-viscosity phosphorus containing flame retardant copolyesters, flame retardant copolyesters with different phosphorus contents were synthesized by melt-polycondensation with 2-carboxyethyl (phenyl)phosphinic acid (CEPPA) as flame retardant. The melt polycondensation was conducted, and the effects of temperature, time and addition amount of phosphorus-containing flame retardant on intrinsic viscosity of copolyesters were investigated. The results show that the flame retardant is added into polyester successfully. The viscosity of copolyesters is increased significantly within a certain temperature range. When the temperature increases further, the degradation reaction intensified making the increase of viscosity more difficult. The more the addition of flame retardant, the more difficult it is to increase the viscosity. By establishing the reaction kinetics model, it was found that the reaction rate constant of flame retardant copolyesters increases with the increase of temperature, and decreases with the increase of flame retardant content.The activation energy increases with the increase of flame retardant content, the highest reaches 114.73 kJ/mol. The factors for melt polycondensation are analyzed based on the orthogonal experiment. The important order was found to be the reaction time, addition amount of flame retardant and reaction temperature.

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    Structural design and implementation of warp-knitted fully-formed neck sleeves
    ZOU Ya'nan, XIA Fenglin, DONG Zhijia, HUANG Mengting, CHU Kaiyuan
    Journal of Textile Research    2021, 42 (12): 76-80.   DOI: 10.13475/j.fzxb.20210306705
    Abstract199)   HTML3)    PDF(pc) (4243KB)(27)       Save

    Aiming at the current problems of knitted neck sleeves with simple styles and the necessity for multiple cutting and sewing, resulting in cutting loss, this research developed a technique for fully-formed stylish neck sleeves by warp-knitted based on the data analysis of the human head and neck sizes. The basic pattern structure was determined followed by the design of the wearing part and the structure on the pattern. A double-layer structure with openings for the mouth and nose areas was designed and manufactured through the jacquard variable organization positioning design assisted by a CAD system, leading to creation of the process template and the fabric structure simulation platform. Style 3D software was used to carry out the three-dimensional geometrical modeling and virtual display of the warp-knitted fully-formed neck sleeves. The results show that the one-piece double-layer structure is able to be realized using the jacquard technique. Through the two-dimensional simulation and three-dimensional virtual display of the warp-knitted fully-formed fabric, the wearing effect of the developed neck sleeve can be quickly previewed and reviewed to achieve rapid development of new warp-knitted fully-formed products.

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    Airflow sensitivity of local human skin and its influencing factors
    ZHANG Zhaohua, CHEN Zhirui, LI Luyao, XIAO Ping, PENG Haoran, ZHANG Yuhan
    Journal of Textile Research    2021, 42 (12): 125-130.   DOI: 10.13475/j.fzxb.20210400607
    Abstract198)   HTML6)    PDF(pc) (7823KB)(70)       Save

    In order to explore the influencing factors of airflow sensitivity for different human body segments, this study evaluated the local skin temperature change rate of each body segment and the subjective airflow intensity feeling of the front chest, upper back, lower back, front thigh and back thigh under the airflow stimuli at temperatures of 5 ℃ lower than, equal to and 5 ℃ higher than skin temperature, and the Weber fraction was used to analyze the sensitivity difference of each body segment to the airflow. The results show that the stimulating air temperature has a significant effect on the airflow sensitivity of the human body. When the stimulating air temperature is equal to the local skin temperature, the skin airflow sensitivity is the lowest, indicating that the temperature sensor plays an important role in the skin airflow perception. The upper back and the front thigh are most sensitive to the warm airflow, whereas the lower back and the back thigh are most sensitive to the cold airflow, although no significant statistical differences were found between the various body segments.

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    Carbon fiber reinforced epoxy based vitrimer composite material closed-loop recycling
    LI Bo, FAN Wei, GAO Xingzhong, WANG Shujuan, LI Zhihu
    Journal of Textile Research    2022, 43 (01): 15-20.   DOI: 10.13475/j.fzxb.20210905306
    Abstract194)   HTML8)    PDF(pc) (4820KB)(82)       Save

    In order to solve the problem of low recycling efficiency and single recycling component of continuous carbon fiber reinforced resin matrix composite material (CFRP), methyl tetrahydrophthalic anhydride, tetrahydrophthalic anhydride, catalyst zinc acetylacetonate and epoxy resin were used to prepare a high-performance epoxy based vitrimer resin and its composite material. A closed-loop recycling was conducted involving the transesterification reaction of ethylene glycol (EG) at 180 ℃. Ethylene glycol participates in the transesterification reaction, and the composite material is recovered in a closed loop at 180 ℃. The apparent structure, thermal stability and mechanical properties of raw resin, carbon fiber and CFRP, recovered resin, carbon fiber and CFRP prepared from recovered resin and recovered carbon fiber were characterized and analyzed. The results show that the recoverying method can completely recover and reprocess the resin and carbon fiber of the composite material. After recycling, the retention rate of the tensile strength of the resin is 90.1%, the retention rate of the tensile strength of the carbon fiber monofilament is 98.9%, and the retention rate of the flexural strength and shear strength of CFRP are 86.2% and 86.7%, respectively.

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    Improved clothing recommendation algorithm based on simulation scoring
    JIANG Xuewei, TIAN Runyu, LU Fangxiao, ZHANG Yi
    Journal of Textile Research    2021, 42 (12): 138-144.   DOI: 10.13475/j.fzxb.20210204107
    Abstract193)   HTML11)    PDF(pc) (2848KB)(90)       Save

    The traditional clothing recommendation algorithms do not pay enough attention to consumers and clothing characteristics, hence the prediction results are short in pertinence and effectiveness. To improve on these, a model of consumers' interest attenuation in shopping was constructed by using clothing coding, time interval and Euclidean distance, and an improved clothing recommendation algorithm based on simulation scoring was proposed. By comparing the average absolute error between the true values and the predicted values of the simulation scoring algorithm and the improved algorithm based on singular value decomposition, it is found that the average absolute error of the simulation scoring algorithm is 0.808, which is 0.024 lower than that of the improved algorithm based on singular value decomposition. The error of 25% of all cases is bigger than 1, and the average error after excluding this part of cases is 0.632. Through such case analysis, it is found that the average absolute accuracy of 90% recommendation is greater than 96%, and the accuracy of 10% recommendation is between 60% and 64%. The reason for big error is either because of the preference changes of the targeted consumer groups, or the targeted consumer group have not purchased clothes for a long time.

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    Characteristics of forward wrapping of hollow spindle covered spinning
    AO Limin, TANG Wen
    Journal of Textile Research    2021, 42 (11): 39-45.   DOI: 10.13475/j.fzxb.20200809407
    Abstract193)   HTML18)    PDF(pc) (1741KB)(67)       Save

    In order to explore the wrapping effect characteristics of hollow spindle covered spinning which is different from other spinning technologies with hollow spindle mechanism, the process route and wrapping principle of covered spinning, parallel spinning, and hollow spindle fancy twisting technology were compared, the "forward wrapping" process was adopted for the direct wrapping of the core yarn by the outer wrapping yarn in covered spinning,and speed and tension analyses were carried out on the wrapping action. The results show that the wrapping angle of the outer wrapping yarn causes the wrapping point to move when the core yarn speed and the wrapping speed are unbalanced, and the joining guide wire imposes limits on the fluctuation of the wrapping point, resulting smaller range of wrapping twist variation. A suitable core yarn tension was found a necessary guarantee for achieving normal wrapping, and the deviation of the wrapping point from the center line caused by improper tension matching would cause change in wrapping structure. The wrapping tension causes the core yarn to rotate in the same direction as the wrapping direction, which has a counteracting effect on the wrapping twist.

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    Primary color extraction method for brocade
    MIAO Peiyuan, FANG Zhouqian, SUN Ting, JIN Xiaoke, ZHU Chengyan, TIAN Wei
    Journal of Textile Research    2021, 42 (09): 120-125.   DOI: 10.13475/j.fzxb.20201102806
    Abstract191)   HTML16)    PDF(pc) (13399KB)(326)       Save

    Traditional ethnic brocades are rich in colors, and their unique color collocation is an outstanding source for design inspiration to designers. Aiming to find a suitable method to extract the primary colors of ethnic brocade, different methods were used to extract and analyze them. We used the K-means optimization algorithm, color layering method based on HLS color space, and Photoshop software to extract the primary colors of ethnic brocade. 8-color or 10-color primary color cards were constructed, based on which the brocade pictures with the extracted primary colors were reconstructed. Following that, a comparative analysis of the primary color card sof ethnic brocades from the perspective of Lab value and RGB value shows that Photoshop software is more suitable for the primary color extraction for ethnic brocades. Finally, the corresponding primary color cards of Zhuang, Li, and Tujia brocade were established. Zhuang, Li, and Tujia ethnic groups have certain regional commonness in the use of color collocation, which is related to the traditional "five elements of positive colors". Through analysis, it is concluded that the use of Photoshop to extract the primary colors of ethnic brocades can provide a reference for designers in the process of color extraction.

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    Green consumption policy system and its enlightenment to clothing green consumption
    SHAO Peng, ZHANG Yuanyuan
    Journal of Textile Research    2022, 43 (01): 208-215.   DOI: 10.13475/j.fzxb.20210906008
    Abstract187)   HTML5)    PDF(pc) (6742KB)(178)       Save

    In order to reduce the environmental pollution caused by the textile industry and to promote the green consumption of clothing, this paper sets out to examine the targeted areas of green consumption policies issued on the national level. Nine dimensions including green products, green technologies, green value chains, green consumption education, green consumption incentives, green consumption subjects, sharing, and recycling, were refined through three-level coding. The research found that green consumption policy focuses on the stage of product production and recycling, which mainly concerns the fields of daily necessities and services, transportation and communications, and lacks attention to the field of clothing. The National Development and Reform Commission, the Ministry of Ecology and Environmental, the Ministry of Finance and the Ministry of Commerce have issued many green consumption policies. It is proposed that garment production enterprises should promote transformation and upgrading through green technology innovation, garment retail enterprises should encourage green consumption intention charge to green consumption behavior, and social and industry institutions should innovate the green consumption cooperation mode.

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    Research progress in heat transfer mechanism of firefighter protective clothing under low-level radiant heat exposures
    ZHANG Wenhuan, LI Jun
    Journal of Textile Research    2021, 42 (10): 190-198.   DOI: 10.13475/j.fzxb.20200808109
    Abstract184)   HTML13)    PDF(pc) (1083KB)(75)       Save

    In order to effectively achieve the control of the thermal damage to the firefighting workers in low heat radiative environment, the complex heat exchange mechanism in the firefighting clothing system, were reviewed to guide product design and development. Based on the heat transfer theory of fire-fighting clothing system, the current research progress was reviewed and discussed from four perspectives, including the basic performance of fire-fighting clothing fabrics and the style of clothing, the morphology and activity of the human body, the characteristics of radiant heat sources, and the coupling effect of heat and moisture. Based on the analysis of the difficulties and bottlenecks in the previous research, the research directions worth exploring for the future were refined, which are the distribution of inhomogeneous air layers and the upgrading of simulation methods, the air flow and velocity field formed by unsteady human motion and environmental wind as well as the relationship between the air flow and heat flow, expanding the connotation of clothing heat transfer mechanism research by coupling human thermo-regulational model.

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