Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (09): 131-136.doi: 10.13475/j.fzxb.20201102106

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Grafting modification of polyamide 6 fabric with methyl methacrylate initiated by hydrogen peroxide/ascorbic acid and its properties

CHEN Xiangxiang1, WU Ting2, ZHOU Weitao1,2,3(), SUN Yangyang1, DU Shan1, ZHANG Xiaoli1   

  1. 1. Hennan Key Laboratory of Functional Textile Materials, Zhongyuan University of Technology, Zhengzhou, Henan 451191, China
    2. Institute of Textile and Garment Industry, Zhongyuan University of Technology, Zhengzhou, Henan 451191, China
    3. Collaborative Innovation Center of Henan Province for Textile and Garment Industry, Zhengzhou, Henan 451191, China
  • Received:2020-11-10 Revised:2021-06-08 Online:2021-09-15 Published:2021-09-27
  • Contact: ZHOU Weitao E-mail:weitao_zhou@yahoo.com

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Abstract:

In order to tackle the whiteness declination of polyamide 6 fabric after prolonged light exposure, methyl methacrylate (MMA) was grafted onto polyamide 6 (PA6) via hydrogen peroxide/ascorbic acid(H2O2/H2A) as initiator. The effects of grafting time, grafting temperature, initiator and monomer concentration on grafting rate were studied, and the micro morphology, chemical structure, whiteness and wearability of the grafted fabric were characterized. The optimal process conditions were identified as follows: grafting temperature 70 ℃, grafting time 60 min, initiator H2O2/H2A mass fraction 30%, MMA concentration 1.5 mol/L. The fabric surface became rough after grafting with small granular materials. The whiteness index of the modified fabric increased from the previous 58.6 to 70.53 after UV irradiation for 8 h, showing excellent light resistance. The stiffness index of the modified fabric increased from 10.7 to 23.6, and the smoothness increased from 71.7 to 80.3, both contributing to good wearability.

Key words: polyamide 6 fabric, surface modification, initiation system, grafting process, light resistance, wearability, whiteness

CLC Number: 

  • TS156

Fig.1

Effect of reaction time on grafting ratio of PA6 fabrics"

Fig.2

Effect of reaction temperature on grafting ratio of PA6 fabrics"

Fig.3

Effect of initiator mass fraction on grafting ratio of PA6 fabrics"

Fig.4

Effect of MMA concentration on grafting ratio of PA6 fabrics"

Fig.5

SEM images of PA6 with different grafting rates"

Fig.6

Infrared spectra of PA6 fabrics before and after grafting"

Tab.1

Whiteness of PA6 fabric before and after lighting under different grafting ratios"

接枝率/% 白度/%
未光照 光照8 h
0.00 60.62 58.63
0.68 62.22 62.56
1.06 64.15 65.13
2.40 68.94 70.53

Tab.2

Effect of grafting ratio on stiffness and smoothness of PA6 fabric"

接枝率/% 硬挺度 光滑度
0.00 10.7 71.7
0.68 16.8 77.6
1.06 18.9 78.8
2.40 23.6 80.3
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