Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (01): 84-90.doi: 10.13475/j.fzxb.20180100607

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Synthesis of polysulfopropylbetaine and its application inantibacterial cotton fabric

ZHOU Li1,2, WANG Hongbo1,2(), DU Jinmei1,2, FU Jiajia1,2, WANG Wencong1,2   

  1. 1. Jiangsu Engineering Technology Research Center of Functional Textiles, Jiangnan University, Wuxi, Jiangsu 214122, China
    2. Key Laboratory of Eco-Textiles(Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122, China
  • Received:2018-01-02 Revised:2018-08-20 Online:2019-01-15 Published:2019-01-18
  • Contact: WANG Hongbo E-mail:wxwanghb@163.com

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Abstract:

In order to realize the efficient and durable antibacterial activities of cotton textiles, polysulfopropylbetaine (PSPB) antibacterial agents were prepared and applied in the functional finishing of cotton fabrics. The influence of finishing agent concentration, bath ratio, soaking time, baking time and baking temperature on the inhibition zone of cotton fabrics were carried out. The optimal conditions are 54 g/L of finishing agent concentration, 1∶30 of bath ratio, 50 min of soaking time, 150 s of baking time and 170 ℃ of baking temperature. Additionally, counting viable bacteria method was adopted to test the antibacterial properties and fastness to washing of cotton fabrics finished under the optimum reaction conditions. Also, it was proved that PSPB is synthesized and grafted successfully onto the surface of cellulose by characterization of infrared spectrometer and scanning electro microscopy. It is shown that the cotton fabrics finished by PSPB possesses excellent washability, and exhibits good antibacterial activity against both gram-negative bacteria Escherichia coli and gram-positive bacteria Staphylococcus aureus, with 99.87% and 99.99%, respectively, in antibacterial ratio. In terms of tests on the breaking strength and whiteness, no significant influence exists on cotton fabrics finished with PSPB and both properties accord with wearing needs.

Key words: betaine, antibacterial agent, cotton fabric, antibacterial finishing, grafting

CLC Number: 

  • TS195.5

Fig.1

Synthetic routine of SPB and PSPB"

Fig.2

Inhibition zone of cotton fabric finished by PSPB with different concentrations"

Fig.3

Inhibition zone of cotton fabric finished at different bath ratios"

Fig.4

Inhibition zone of cotton fabric finished for different soak time"

Fig.5

Inhibition zone of cotton fabric finished at different baking temperatures"

Tab.1

Strength/whiteness of cotton fabric finished at different curing temperatures"

烘焙
温度/℃		 断裂强力/N 白度/%
经向 纬向
原样 784.4 383.9 72.35
160 722.3 348.2 69.33
170 693.1 331.7 64.70
180 617.5 292.4 52.31

Fig.6

Inhibition zone of cotton fabric finished for different baking time"

Fig.7

SEM images of raw cotton fabric (a) and cotton fabric finished with PSPB (b) (×3 000)"

Fig.8

Infrared spectra of PSPB, raw cotton fabric and cotton fabric finished with PSPB"

Fig.9

Antibacterial rate against E.coli/S.aureus of cotton fabrics finished by optimum processing before and after 30 times of washing"

Fig.10

Photographs of antibacterial activities against E.coli/S.aureus of cotton fabrics before and after finishing."

Tab.2

Wearability of cotton fabrics finished by optimum processing"

试样 经向断裂强力 纬向断裂强力 白度
强力/N 强力保留率/% 强力/N 强力保留率/% 白度/% 白度保留率/%
原棉织物 784.4 — 383.9 — 72.35 —
最优工艺整理棉织物 690.4 88.02 333.1 86.77 64.82 89.59
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