Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (05): 109-114.doi: 10.13475/j.fzxb.20200900207

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation of polyacrylonitrile conductive nanofiber yarn grafted with acrylic acid using plasma technology

LIU Xiaoqian, CHEN Yu, ZHOU Huimin, YAN Yuan, XIA Xin()   

  1. College of Textile and Clothing, Xinjiang University, Urumqi, Xinjiang 830046, China
  • Received:2020-09-01 Revised:2021-01-27 Online:2021-05-15 Published:2021-05-20
  • Contact: XIA Xin E-mail:xjxiaxin@163.com

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Abstract:

In order to improve the adhesion fastness of polypyrrole on the surface of polyacrylonitrile nanofiber yarn and improve the surface hydrophilicity of nanofiber yarn, the surface of polyacrylonitrile nanofiber yarn was grafted with acrylic acid by plasma technology at ambient temperature and pressure, and the conductive nanofiber yarn of polypyrrole was prepared by in-situ polymerization. The optimal treatment time and grafting time of plasma grafting modification were discussed, and the effects of pyrrole monomer concentration, oxidant dosage, dopant concentration and reaction time on the electrical conductivity of polyacrylonitrile nanofiber yarn were analyzed. The results show that when the plasma power is 100 W, the grafting time is 4 h, the water absorption rate is increased from 227.21% to 350.31%, and the mass increase rate of polypyrrole is up to 90%. With concentrations of pyrrole being 0.6 mol/L, ferric chloride 0.8 mol/L, hydrochloric acid 0.6 mol/L, and the reaction time is 0 ℃ for 4 h, the conductivity of polyacrylonitrile nanofiber yarn is increased to 4.589 S/cm.

Key words: normal temperature and pressure plasma, graft, in-situ polymerization, nanofiber yarn, electrical conductivity, arylic acid, polypyrrole, polyacrylonitrile fiber

CLC Number: 

  • TQ342.83

Fig.1

SEM images of PAN nanofiber yarns with different plasma and grafting times(×5 000). (a)Untreated;(b)Plasma and grafting one times;(c)Plasma and grafting two times;(d)Plasma and grafting three times"

Fig.2

Possible reactions of PAN nanofiber yarns during plasma and grafting"

Fig.3

Effect of plasma and grafting times on grafting rate(a) and water absorption(b)of PAN nanofiber yarns"

Fig.4

Surface morphology images of PAN nanofiber yarns with different pyrrole concentrations"

Fig.5

Effect of Py concentration on mass increase rate and electrical conductivity of PAN-AA nanofiber yarns"

Fig.6

Effect of FeCl3 concentration on mass increase rate and electrical conductivity of PAN nanofiber yarns"

Fig.7

Effect of HCl concentration on mass increase rate and electrical conductivity of PAN nanofiber yarns"

Fig.8

Effect of reaction time on mass increase rate and electrical conductivity of PAN nanofiber yarns"

Fig.9

FT-IR spectra of different PAN samples"

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