Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (03): 31-37.doi: 10.13475/j.fzxb.20211105307

• Invited Column: Biomedical Textiles • Previous Articles     Next Articles

Preparation and properties of antibacterial hemostatic nonwoven elastic bandage

CHENG Yue1, HU Yingjie2, FU Yijun1,3(), LI Dawei1,3, ZHANG Wei1,3   

  1. 1. School of Textile and Clothing, Nantong University, Nantong, Jiangsu 226019, China
    2. College of Textiles, Donghua University, Shanghai 201620, China
    3. National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Health, Nantong, Jiangsu 226019, China
  • Received:2021-11-09 Revised:2022-01-06 Online:2022-03-15 Published:2022-03-29
  • Contact: FU Yijun E-mail:fuyj@ntu.edu.cn

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Abstract:

In emergencies, surgical operations and military conflicts, the human body may suffer from severe trauma resulting in massive bleeding. In order to effectively control bleeding and reduce the chance of wound infection, an elastic bandage with antibacterial hemostatic functions was developed. Polypropylene (PP) spunbonded elastic nonwovens were chosen as the base materials and treated with hydrophilic modification of polyvinyl alcohol (PVA) and grafting modification of chitosan (CH) to obtain PP-PVA-CH elastic nonwovens with both functions of antibacterial and hemostasis. The properties of the samples before and after modification were analyzed. The results show that PVA and CH were successfully loaded on the surface of nonwovens without affecting the main crystal structures. The maximum tensile breaking strength and elongation at break of PP-PVA-CH were 1.40 and 1.24 times higher than that of PP, and elastic recovery rate of PP-PVA-CH was 88%. Contact angle of the modified sample decreased effectively, and the diffusion areas of deionized water and synthetic blood were 13.0 and 12.9 times that of PP elastic nonwovens, respectively. Antibacterial rate of PP-PVA-CH elastic nonwovens against E.coli and S.aureus were found higher than 99.0%.

Key words: medical and hygiene textiles, elastic bandage, antibacterial, liquid adsorption, nonwoven, chitosan

CLC Number: 

  • TS101.4

Fig.1

Diagram of elasticity test at fixed elongation"

Fig.2

Micromorphology of different samples"

Fig.3

Infrared spectra of different samples"

Fig.4

XRD patterns of different samples"

Tab.1

Surface density and loading capacity of different samplesg/m2"

试样 面密度 负载量
PP 47.2±1.3 0
PP-PVA 58.7±1.9 11.5±1.1
PP-PVA-CH 70.0±1.5 11.3±1.2

Tab.2

Maximum tensile breaking force and elongation at break of different samples"

试样 最大拉伸断裂强力/N 断裂伸长率/%
PP 18.21±1.57 54.36±2.98
PP-PVA 18.56±2.16 56.62±3.45
PP-PVA-CH 25.47±2.31 67.30±4.56

Fig.5

Typical tensile curve of different samples"

Tab.3

Results of elasticity test at constant elongation of different samples"

试样 L0/mm L1/mm L2/mm ρ/% ε/%
PP 100 150 103 94 3
PP-PVA 100 150 105 90 5
PP-PVA-CH 100 150 106 88 6

Fig.6

Elasticity test photos of different samples"

Fig.7

Liquid diffusion properties of different samples. (a) Photographs; (b) Diffusion area of samples"

Tab.4

Antibacterial rate of different samples%"

试样 抑菌率
大肠杆菌 金黄色葡萄球菌
PP 1.56±0.21 2.38±0.51
PP-PVA-CH 99.9±1.05 99.0±0.89

Fig.8

Antibacterial effect of different samples. (a) For E.coli; (b) For S.aureus"

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