Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (08): 101-106.doi: 10.13475/j.fzxb.20210301606

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Antimicrobial properties of chloramine-grafted polyester/polyamide microfiber knitted fabrics

XIONG Tanping1, TAN Fei2, HUANG Cheng2, YAN Kelu2, ZOU Ni3, WANG Zheng1, YE Jingping4, JI Bolin2()   

  1. 1. Shanghai Leader Specific-Silk Co., Ltd., Shanghai 201508, China
    2. College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
    3. Shanghai General Hospital, Shanghai 201620, China
    4. Fujian Billion Polymerization Technology Industrial Co., Ltd., Quanzhou, Fujian 362200, China
  • Received:2021-03-03 Revised:2022-05-03 Online:2022-08-15 Published:2022-08-24
  • Contact: JI Bolin E-mail:blji@dhu.edu.cn

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Abstract:

In order to evaluate the practical antimicrobial effect of chloramine fabrics as wiping cloths in the field of public health,the optimal chloramine fabric activation process of polyester/polyamide microfiber fabric grafted with 3–allyl–5,5–dimethylhydantoin (ADMH) was investigated based on the content of active chlorine on the fabric. The optimal activation process was reached when the active chlorine concentration of sodium hypochlorite solution was 3 000 mg/kg, the soaking time was 20 min, and the fabric was dried at 60 ℃ for 20 min. The chloramine fabric was tested for antibacterial performance against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), and for antivirus property against influenza A virus H1N1. The treated fabric was used for wiping the intensive care unit (ICU) ward facilities in a hospital and public canteen dining tables. The results show that the antibacterial ratio against both S. aureus and E. coli reaches 99.999％, and the antiviral activity ratio against H1N1 is 99.94％. The amount of residual bacteria on the surface of the cleaned ICU facility is zero. After wiping thirty dining tables successively with the same chloramine fabric, neither the surfaces of the wiped 30 dining tables nor the wiping fabrics were found to be contaminated with bacteria. Moreover, the chloramine fabric shows a good activation and regeneration property of active chlorine when it is treated with sodium hypochlorite solution.

Key words: functional textiles, antibacterial fabric, N-halamine grafting, antimicrobial property, activation and regeneration, active chlorine

CLC Number: 

  • TS195.5

Fig.1

Effect of different factors on active chlorine content in fabric: (a) Drying temperature; (b) Drying time; (c) Activating time; (d) Concentration of active chlorine in solution"

Tab.1

Antibacterial property of chloramine modified fabrics against S. aureus and E. coli"

接触时间/
min		 抑菌率/％
对金黄色葡萄球菌① 对大肠杆菌②
0.5 84.864 87.977
1 94.988 93.974
3 99.999 99.999
5 99.999 99.999
10 99.999 99.999
30 99.999 99.999

Tab.2

Antiviral property of N-halamine modified fabrics against H1N1"

试样 感染病毒滴
度的对数值		 抗病毒
活性值		 抗病毒活
性率/％
对照样(接种孵育0 h) 6.66
对照样(接种孵育2 h) 6.04 3.22 99.94
测试样(接种孵育2 h) 2.82

Tab.3

Antibacterial property of N-halamine modified fabrics for wiping side cabinet and bedrail in hospital"

床号 床栏 边柜
擦拭前 擦拭后 擦拭前 擦拭后
1 有菌 无菌 有菌 无菌
2 有菌 无菌 有菌 无菌
3 有菌 无菌 有菌 无菌
4 有菌 无菌 有菌 无菌

Fig.2

Antibacterial property of N-halamine modified fabrics for wiping dining tables. (a) Bacterial growth on tabletop before wiping; (b) Bacterial growth on tabletop after wiping; (c) Bacterial growth on N-halamine fabric"

Fig.3

Active chlorine content of fabrics after different washing times and activation"

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