Table of Content

15 May 2014, Volume 35 Issue 5

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Structure and properties of cellulose fibers from 1-ethyl-3-methylimidazolium acetate by dry-wet spinning with small gap

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  1-0. 

Abstract ( 1055 )   PDF (1374KB) ( 784 )   Save

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Cellulose fibers were prepared from cellulose/1-ethyl-3-methylimidazolium acetate([EMIM]Ac) solution by dry-wet spinning with different small gaps and drawing speeds. Density gradient tubes, mercury porosimetry, wide angle X-ray diffraction(WAXD), birefringent, tensile-fineness tester and wet friction were utilized to characterize the structure and mechanical properties. The results showed that density gradient tubes and mercury porosimetry were accurate methods for testing of density and crystallinity of cellulose fibers. WAXD was suitable for relative comparison of crystallinity. Fibers tested were dense. Under small gap condition, increasing gap was in favor of the relaxation of internal stress of spinning solution, properly increasing drawing speed was in favor of the orientation and crystallinity of fibers, which led to better mechanical properties of fibers.

Morphology and photocatalytic properties of titanium sol prepared by sol-gel method

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  7-0. 

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Particle size, crystalline state and dispersed state in water of titanium sol prepared via sol-gel method and several typical commodities TiO2 powders were characterized by high resolution transmission electron microscopy (HRTEM), X-ray diffraction analysis (XRD) and particle size analysis (DLS). Their UV-visible absorption characteristics and photocatalytic degradation effects to acid fuchsin 6B dye were evaluated by UV-Vis spectrophotometry. It was found that titanium sol particles prepared by sol-gel method possess typical anatase crystalline form. Compared with these TiO2 powders, the titanium sol particles has a high selectivity to UV-Vis (UV shielding - visible through) and a more excellent photocatalytic degradation due to its small apparent particle size and high dispersibility in water medium.

Detection of foreign fibers among cotton based on image multi-resolution difference method

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  13-0. 

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Abstract For cotton foreign fiber detecting difficulty problem, the method is proposed for detection cotton foreign fiber based on the multi-resolution image difference. First of all, different frequency components of detection image are separated through the wavelet decomposition. Then, different resolution sub-graphs are used differential to improve information contrast of foreign fiber and cotton. On this basis, the Maximum between-Cluster Variance method is proposed for Bi-value image of multi-resolution difference sub-graph and anisotropic fiber information. Finally, the segmentation images are fused for the fibers information, so as to detect the complete opposite fiber information. Experimental results show that the method can effectively restrain the cotton background information, maximum extract foreign fiber information, and foreign fiber detection accuracy rate exceed above 90%.

Influence of sample weight on prediction of far-infrared fiber content based on near-infrared spectrodscopy

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  19-0. 

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The traditional methods cannot meet the far-infrared and matrix ordinary fiber quantitative analysis, so the Near-infrared spectrum analysis technique is presented. Choose the common far-infrared polyester fiber, far-infrared polypropylene, polyester and polypropylene fiber as the research object.In this reach,combined with the sample weight affect the model,the far-infrared polyester/polyester and far-infrared polypropylene/polypropylene models which can achieve good prediction results were established by manual sampling and PLS method.Results show that the average relative errors of the far-infrared polyester and far-infrared polypropylene content were 2.03% and 3.76%.The research shows that the Near-infrared spectrum technique can be used as a method of quantitative analysis for far-infrared fiber.

Preparation and characterization of polyurethane∕polyvinylidene fluoride waterproof permeable composite fabric

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  23-0. 

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PU/PVDF nanofibrous membranes were successfully prepared by electrospinning in this paper. By changing of the mass ratio of solute, it could be seen that it had great effect on morphology, diameter of the spun fibers and the contact angle of fiber membrane. In this study, PU/PVDF membrane with optimum parameter was explored. After that, press the membrane and polyester cloth together by selecting one-component polyurethane adhesive of optimum concentration through electrospinning, and its waterproofness, breathability and other performances were investigated. The results showed that the optimum process for electrospinning of PU/PVDF membrane were, the mass ratio of solute of PU/PVDF 7/3, voltage 14 kV, traveling distance 10 cm, concentration 12 wt% and volume ratio of component solvents of DMF/Acetone 4/6. The distribution of adhesive appeared as micron spot or block on the surface of polyester cloth. In addition, its cohesiveness and breathability were better when the concentration of adhesive was about 40 wt%. With the increasing of thickness of PU membranes, the waterproof values, the breathability and breaking elongation of compound fabric were worse while its breaking strength was better，and it had a similar humidity resistance with PU/PVDF membranes’.

Measurement and characterization of bending rigidity of common high-performance yarns

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  30-0. 

Abstract ( 910 )   PDF (952KB) ( 613 )   Save

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In recent years, due to the development of technical textiles, Thin-shell composites reinforced by directionally oriented fabrics have increasingly become a hot research topic. Inserting yarn is key component of directionally oriented fabrics, and bending deformation is the primary form in the deformation of fabrics. Therefore, the bending rigidity of inserting yarn make a large difference in conformation of directionally oriented fabrics. With the help of KES fabric style instrument, the maximum bending moment (M_max) and the fitting slope (s) are measured, which is used to characterize the bending rigidity of four commonly used high-performance yarns. The experimental results indicate: under the same Fineness, the bending rigidity of high-performance yarns is greater than that of traditional yarns, as for the four high-performance yarns in the experiment, the rank of the bending rigidity is Carbon yarn, Glass yarn, UHMWPE yarn and Kevlar yarn in descending order; the rigidity of the high-performance yarns is affected by arrangement and aggregation of filament, and decreased as the enter angle increased.

 Boiled-water shrinkage of warp-knitted cotton -like polyester filament fabric and its influence factors

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  34-0. 

Abstract ( 1043 )   PDF (1272KB) ( 369 )   Save

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Abstract cotton-like PET warp fabric’s weaving shrinkage and boiled water shrinkage were researched and analysised in this paper. By using the chart analysis and unequal level orthogonal experimental method, it’s discussed that related laws and impact of important factor in woven fabric shrinkage and boiled water shrinkage overall of the cotton-like PET warp fabric’s shrinkage. Experimental results show that: the different organizational design for cotton-like PET warp fabric’s shrinkage have a certain regularity influence, pulling density is the most important factor to affect the fabric shrinkage.

New single cell model for numerical simulation of mechanical behavior of satin weave composites

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  40-0. 

Abstract ( 635 )   PDF (2657KB) ( 598 )   Save

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To improve the efficiency of numerical simulation for satin weave composites without loss of accuracy, a new parallelogrammic unit cell was proposed based on the meso-structure of 5-harness satin weave composites. By introducing the failure criteria proposed by Linde, the stress-strain relation of the composites under traction in the warp direction/in-plane shear was simulated by finite element (FE) model based on the novel parallelogrammic unit cell and traditional rectangular unit cell respectively. Comparison between the numerical results of these two unit cells shows great accordance and both of them capture the data from experiments. Given its great advantage on diminishing the model size and computational efficiency compared with the traditional unit cell, the parallelogrammic unit cell is proved to be rational and effective. Furthermore, the method of constructing parallelogrammic unit cell for other regular satin weave composites is proposed, providing an effective way for optimal design and mechanical analysis of this kind of composites.

Inspection method of lattice apron porosity based on image processing

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  49-0. 

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The porosity of the lattice apron fabric was inspected by image processing method. The scanned image of lattice apron fabric was converted into a binary image by threshold segmentation. The diameter of warp and weft yarns was determined by the projection data of the binary image. The theoretical porosity was calculated according the diameter and density of yarns. The interferential white regions on image were removed by judging whether they were in the body of the yarns or not. Then the binary image was reversed and filtered to remove small white regions. Pore characters such as the number of pores, the area size of pores, the distribution of pores and actual porosity, were extracted and small pores were marked. The experimental result shows that the pore characters by image processing method can objectively reflect the porosity of the lattice apron and the uniformity distribution of the pores.

Anti-stabbing performance of laminated composite fabric

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  55-0. 

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Abstract: Due to the ballistic panel still need to be further improved to get better stabbing performances, in this project, compress moulding process was used to combine spacer fabric with UD fabrics and woven fabrics with different adhesives and the new composites were under quasi-static and impact testing to investigate its anti-stabbing performances. The results shows that firstly with a tighter fabric structure on the spacer fabric’s up and down layer, the anti-stabbing capability will increased apparently; secondly, the perpendicularly yarns in the middle of the spacer fabric can lock the edge of the knife efficiently to stop it going down continuously; and thirdly, with a stronger, higher tenacity and higher cohesive strength adhesive, the anti-stabbing performances can be improved accordingly.

Preparation of wave-absorbing coated composite fabric and its microwave absorption capacity

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  61-0. 

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The appropriate absorbing powders were selected by taking advantage of the transmission line theory of single layer absorber in combination with computer-aided design (CAD). The flexible textile coating fabrics based on copper-nickel coating fabric (CNCF) and metallic yarn blended composite fabric (MYBF) with polyurethane as matrix were prepared, and the thickness of coatings was 1.5mm. The electromagnetic properties of absorbing powder were measured and analyzed. The effects of absorbing powder and matrix of different mixed ratio and fundamental fabrics on reflection loss and absorption mechanism were investigated and studied in frequency range of 2.6GHz-18GHz.The results showed within a certain range absorbing powder volume percent increase, absorbing performance improved, band broadened, the peak of reflection loss curve moved to lower frequency. The absorbing performance of coating fabric based on MYBF was better than that based on CNCF.

Thermal insulation properties of agricultural covering nonwovens

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  67-0. 

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The factors include modifier dosage, temperature, time and PH value to the organic surface modification of TiO2 by SDBS was studied with orthogonal experiment. The results show that while the amount of SDBS is 11%, the temperature is 90 ℃, time is 45min, PH value is 5, TiO2 is modified best. Covered tea trees with the modified TiO2 coated nonwovens, recorded shed and outdoor nonwoven temperature and measured content of tea polyphenols and caffeine by chromatograms for studying agricultural covering nonwovens’ insulation performance. The results show that when the mass ratio of modified TiO2 is 25%, the agricultural covering nonwovens’ shed and outdoor temperature is maximum, content of polyphenols and caffeine is the highest, agricultural covering nonwovens’ insulation is best.

Adsorption kinetics of reactive dye onto modified palm fiber activated carbon

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  72-0. 

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The palm fiber was carbonized and then modified by MgO in precipitation burning oxidation method for dealing with dyeing wastewater. The surface of MgO modified palm activated carbon (MgO/PAC) was observed by the scanning electron microscopy (SEM), the FT-IR spectra and the true density. Palm activated carbon and modified palm activated carbon’s adsorptive capacity were tested by the static absorption experiments. The adsorption kinetic study of dye in different initial concentration and the adsorption quantity in different pH were studied. The results showed that, the dye adsorption quantity was improved almost 8 times after the modification; the adsorption on Reactive Brilliant Red X-3B followed the pseudo second-order kinetic model and whose reaction rate was not only controlled by the intra-particle diffusion but also by extra-particle diffusion process.

Influence of surfactants on cellulase bio-washing

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  78-0. 

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In order to solve the problem of indigo back staining in cellulase bio-washing, the effect of anionic surfactant (SDS), zwitterionic surfactant (PC), nonionic surfactants (T60 and AEO-9 ) on cellulase adsorption and hydrolysis were first detailed analyzed. And then, the effect of complex system of different surfactants on denim bio-washing was further studied. The results showed that the selected surfactants had a slight effect on indigo adsorption with cellulase. However, anionic surfactant and nonionic surfactant could decrease the adsorption amount of cellulase on micro-crystalline cellulose. For the cellulase hydrolysis, anionic surfactant greatly reduced the cellulase activity, while zwitterionic surfactant and nonionic surfactants had little effect on cellulose, and even had certain activation. Finally, the CIE L and CIE |b| values showed that the synergism of anionic surfactant and nonionic surfactant didn’t reach a good bio-washing result while the synergism of non-ionic surfactants had a better performance.

Synthesis of dual ligand rare-earth light conversion agent and its application on UV- protection  fabric

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  83-0. 

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This paper discusses two synthesis methods for dual organic ligands rare-earth light conversion agent, one is Solid phase synthesis method, and another is liquid phase synthesis method. By contrast of infrared spectra, dispersion properties in aqueous solution and Anti-UV effect of each light conversion agent made by both methods, we find that in liquid phase synthesis, europium ionic binding with organic ligands more fully, and the conversion agent made by liquid phase synthesis is easily solved and dispersed uniform, and its anti-UV effect is better than that made by solid phase synthesis methods.

Survey analysis of triclosan in textiles by liquid chromatography - tandem mass spectrometry

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  87-0. 

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The method for the determination triclosan in five major categories of textiles by liquid chromatography - tandem mass spectrometry (LC-MS/MS) was established, and 15 samples were randomly selected from the market for survey analysis. The method has good linear relationship in the range of 0.01-0.5 μ g/mL, linear equation is: y=3.5e4x-994, correlation coefficient was 0.9998, the determination of the lower limit was 0.025 mg/L, the average recovery rate was 85.6 - 107.2%, the relative standard deviation was less than 7%. Only 2 samples was detected in all samples, showed that in textiles had been add triclosan.

Determination of octylphenol and nonlyphenol in silk products by gas chromatography-mass spectrometry

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  91-0. 

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Abstract: A method was developed for measurement of octylphenol(OP) and nonlyphenol (NP) residues in textile products by gas chromatography-mass spectrometry， which studied the choice of extraction solvent, extracting methods, solid phase extraction conditions and conditions of gas chromatography-mass spectrometry. The study showed that the OP and NP in textile products were detected by n-hexane solvent with ultrasonic-assisted extraction, purified by Supelclean Envi-Carb solid phase extraction column and determined by gas chromatography-mass spectrometry. Quantitative ions were selected at m/z107 for OP and NP, and qualitative ions were selected at m/z206 for OP and m/z220 for NP. The results indicated that under the optimized conditions, the spiked recoveries were 86.20%-106.20%（OP）and 81.10%-91.80%（OP）, and the relative standard deviations(RSDs) for concentration of 0.1mg /kg were 7.81% and 4.56% ( n = 6) . The quantitation limits were 0.1mg /kg. The method was simple, rapid and sensitive, and could meet the relevant requirement of European Union.

Thermal and humidity changes on body surface of primary schoolchileren in defferent activities and their influences on school uniform design

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  97-0. 

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Physiological characteristics of primary schoolchildren in different activities are the important factors influence on material application and structure design of school uniform. In order to develop school uniform with comfortable performance, a series of experimental works were conducted in this study for understanding physiological characteristics of primary schoolchildren in different activities. 50 primary schoolchildren were recruited and they were required to perform three actions: resting with sitting posture, marking time, and running. During the different progresses, skin temperatures and relative humidity in 8 locations of human body were collected. The experimental results reveal that values of skin temperature are maximum and values of relative humidity are minimum in resting with sitting posture. In running exercise, values of skin temperature are minimum and values of relative humidity are maximum. During 8 body locations, armhole, chest (bust), back body and neck base are the important location with significant body characteristics. Based on experimental results, detailed influences of primary schoolchildren physiological characteristics on determining of material properties and structure design are analysed and discussed. Finally, the design principles on school uniform are proposed.

Analyzing constitutional factors of wearing style and its overall desing

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  103-0. 

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The thermal insulation properties of one piece of clothing are different in different wearing methods. The wearing method of clothing was deconstructed into three factors in this paper, including body surface area coverage, clothing openings and sectional fabric wrinkled up. Based on these three factors, a piece of clothing with adjustable wearing methods was developed. The objective tests based on Human Ergonomics principles and the subjective evaluations in wearing trials were conducted. Some key elements were evaluated and optimized in clothing construction design, including the positions of unzipping the placket zipper, the positions of unzipped sleeve attached to the body, and the positions of detaching (rolling up) sleeves on forearms. Finally, the clothing with adjustable wearing methods was developed, which will be used in the following experiments of quantitatively evaluating the effects of the different wearing methods to clothing thermal insulation properties.

 Fashion perceptual data mining based on clustreing algorithm

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  108-0. 

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The present study correspond discrete design elements to fashion Kansei information, and taken men’s coat for example, collected consumers preference rates of all related design elements through questionnaires, and then designed the consumers Kansei intention matrix. After normalized the matrices data, used K-means clustering algorithm for data processing through WEKA, which was the professional data mining software. Finally, base on the output data to built four typical design models. The purpose of this study is process and analysis the choices of most consumers from lots of fashion Kansei information, and fitting out the styles which satisfy the emotional needs of most consumers and to obtain the representative "best design model". Through the method of the present study proposed, could reveal the preference of different types of consumer effectively, and screen out the important design elements of positive impact to consume behavior, and provide reference to fashion designers effectively.

Female body shape prediction based on random forest

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  113-0. 

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Abstract: Clothing fit is a problem of demanding prompt solution in the present apparel industries. In order to determine the true shape of female body accurately, the large number of measurement data of 730 female subjects aging 18-50 was analyzed and six characteristic factors were extracted by factors analysis. Female figure was classified from the three levels, including the whole body type，local morphological characteristics and figure silhouette. According to it, prediction model of female body shape was established by using the algorithm of random forests, and the programmed tool was R language. The results showed that three of the random forest classifiers had high accuracy of prediction, which was up to 85% both for train samples and for test samples. It suggested that the prediction model was reliable for female figure identification. Further, the vital characteristic variables featuring female body shape were filtered by using random forest variable importance measures.

Sewing skills research of folk Horsetail embroidered back belt of Shui nationality

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  118-0. 

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The paper researched the folk Horsetail embroider belt from the history culture,structure and sewing skills based on the analysis of Guizhou province qiannan Buyi and Miao Autonomous prefecture in Sandu Shui automous county culture and field reseach.The horsetail embroidered belt is an important part of Guizhou Shui Ethnic minority costumes.It’s unique style and structure,embroidery arts,sewing process demonstrates the unique ethnic culture characteristics. This paper uses the form of field reseach, and records the sewing process of one typical Horsetail embroidered belt,when makes the main production and detailed, then further analyses the sewing and embroidery skills. We can draw the folk Horsetail embroider shows the technical skills ,culture characteristics and artistic on the basis of following the traditional concept of creation,and objectively reflects the people who love life, pray for peace and harmony of the aesthetic values and emotions.

Effect of Laval tube structure on performance of yarn suction gun for FDY

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  122-0. 

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To elucidate effect of Laval tube structure on the performance of yarn suction gun for FDY, throat diameter and throat length of the Laval tube are determined by analyzing fluid field of the yarn suction gun on theory. By changing the converging angle of Laval tube ? and the diverging angle of Laval tube ?, yarn suction force F and mass flow rate of compressed air G of the yarn suction gun are measured, and then effects of ? and β on the yarn suction efficiency η (η = F/G) are analyzed. The optimal Laval tube is the one with geometrical parameters of ? = 90° and ? = 6°. η can be raised through a rational ?, with which the converging part of Laval tube accelerates airflow and makes the airflow develop into a strong swirling flow. A rational ? contributes to not only acceleration of super-sonic swirling airflow in the diverging part of Laval tube but also low running resistance of air and yarn, thus enhances?η. However, an over-large ? results in a low?η?because it causes normal shock wave to occur early, which stops the air acceleration and leads to a great loss of kinetic energy.

Numerical simulation and experimental verification of weft insertion flow field of main nozzle in air-jet loom

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  126-0. 

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In order to fully understand the velocity distribution of jet flow of the main nozzle in an air-jet loom, which is used for optimizing the process parameters of weft insertion system, the numerical simulation based on weft insertion flow field of main nozzle is carried out by the computational fluid dynamics software called Fluent. The velocity distribution curve of the flow field centerline and the velocity distribution contour of the cross-sections which are perpendicular to the flow field centerline are obtained. In order to verify the rationality of numerical simulation, the speed of different points in the flow field has been got by the experiment. Finally by comparing the two results it’s indicated that experimental velocity is about 60m/s lower than simulative velocity at the outlet of the main nozzle, then the gap between them is shrinking as the flow field extends, and they are in good agreement since 70mm away from the outlet. So the simulative results deserve being referenced in practice.

Warp tension changing caused by shedding on loom

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  132-0. 

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In order to find the solution which helps to reduce the changes of warp tension in loom, the rules of warp path changing by shedding is researched, the influence on warp elongation caused by shedding is analyzed quantitatively, the rule of activity back roller swing which is needed to offset the warp tension changing during shed opening is obtained. At the same time, the difference of activity back roller swing needed by warp on different healds is analyzed comparatively. The result indicates that it is better to alleviate the changes of warp tension in loom by designing an activity back roller system. In this system the activity back roller swings as shed opening. Moreover, its effect is greatly related to the number of healds, the shed parameters, as well as the fabric structure. It is better to compensate the warp tension changes caused by fabric structure changes by adjusting the warp tension testing cycle in electronic let-off system. As a result, it is adaptive that we use symmetric shed and design the activity back roller system when the structure of fabric is simple and the elasticity of fiber is lower, such as plain fabric, glass fiber and high strength polyester.

Individual differences in perceptual evaluation for fashion design: taking female students as research subjects

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  137-0. 

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Nowadays, customer choice for fashion is shift from rational evaluation to emotional evaluation, the individual difference in emotional evaluation is paid more and more attention. Based on customer educational background, this paper compares the differences in emotional evaluation for fashion design between design-field group and non-design-field group. The results reveal: (1) emotional and overall evaluation variables for the same design are significantly different between two groups; (2) the effect of emotional evaluation variables on overall evaluation is varied from group to group; (3) emotional evaluation dimensions is varied from group to group; (4) the effect of emotional evaluation factors on overall evaluation is also varied from group to group. Based on the results, some related suggestions is put forward, furthermore, directions of future research is point out.

Demand forecasting method for seasonal clothing based on construction gene database

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  142-0. 

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New seasonal clothing has these properties: few history sale data and short life cycle, it’s not appropriate to forecast the demand of new seasonal clothing using traditional forecast method based on data sequence serial. However, there exists lots of characteristic information in apparel enterprise’s POS data. A method to abstract characteristic information from POS data was provided to build the sale gene database, which classified the apparel sale data by combining hierarchical clustering and dynamic time wrapping (DTW). And a forecasting method was put forward to calculate the demand of new seasonal clothing based on the constructed gene database, which computed the similarity between a new clothing and a gene of the characteristic database, searched the nearest gene, and compute the demand of the new seasonal clothing based on the information from the nearest gene. The proposed method provides a solution for apparel companies to forecast its demand quantificationally based on its POS data, which can be used to build a quick response system. Experiment was carried out, which abstracted the gene database based on 2011 POS data of a famous apparel enterprise, and the new SKUs sold between 2012-03-01 and 2012-07-31 were used to forecast its demand based on the constructed gene database. And the result proved the effectiveness of the proposed forecasting method.

Research advances in electrospinning collectors for preparation of nanofibers

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  149-0. 

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Electrospinning is an important method to fabricate nanofibers that has strong application value in many fields and has caused widespread concern. Due to the orientation and structure of nanofibers having great influence on its performance, recent researches focused on how to get electrospun material with different structure or morphology to meet the requirement of different areas. As an important part of electrospinning apparatus, the collectors determine the distribution and combination of electrospun fibers. Three basic types of electrospun materials can be fabricated through the improvement of collectors at present, namely aligned nanofibers, patterned fiber membranes and three-dimensional structures. This paper briefly describes electrospinning principle, respectively, compares the structural characteristics and receiving effect of different collectors may be employed in the preparation of three types of electrospun materials. This review will be useful for reference of studies about the preparation of nanofiber materials, design of electrospinning devices and application of electrospinning technology.

Research progress and existing problems about characterizing fuzzing and pilling

Ai-Lan WAN

JOURNAL OF TEXTILE RESEARCH. 2014, 35(5):  157-0. 

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In view of the mechanism of flokkit and pilling, this paper reviewed the advances of characterization technology by combination with the available testing methods and characterization science. The frequently-used fabric pilling testers, such as Martindale abrasion tester, ICI pilling box and the random tumble pilling tester, image processing and prediction by the artificial neural network were introduced and . The researches of previous researchers about the mechanism and characterization of flokkit and pilling and its effect on the characterization technology were briefly reviewed, to illustrate the importance of the mechanism of flokkit and pilling, and to prompt that the research on the aspect will contribute to the classic problem of the characterization of flokkit and pilling solving and breakout. The problem of flokkit and pilling mechanism was also analyzed and thus the disadvantages of the sorts of characterization technologies as result of the insufficient researches on flokkit and pilling mechanism were proposed. It will help to characterize the mechanism of flokkit and pilling in nature.