Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (10): 113-119.doi: 10.13475/j.fzxb.20180908207

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation of high-electrical conductivity polypyrrole-coated fabrics

HE Qingqing1,2, XU Hong1,2(), MAO Zhiping1,3, ZHANG Linping1,2, ZHONG Yi1,2, LÜ Jingchun1,2   

  1. 1. Key Laboratory of Eco-Textiles, Ministry of Education, Donghua University, Shanghai 201620, China
    2. College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
    3. Innovation Center for Textile Science and Technology,Donghua University, Shanghai 201620, China
  • Received:2018-09-30 Revised:2019-06-30 Online:2019-10-15 Published:2019-10-23
  • Contact: XU Hong E-mail:hxu@dhu.edu.cn

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Abstract:

In order to apply polypyrrole conductive materials in the textiles field, functional textile fabrics with excellent electrical conductivity and electrical stability were developed. The surface of cotton knitted fabric was modified by NaOH/urea system. Polypyrrole was deposited on the surface of the modified cotton knitted fabric by in-situ polymerization to prepare conductive fabrics. The influences of parameters such as concentration of pyrrole monomer, oxidant dosage, dopant concentration, dopant type, reaction temperature and reaction time on the electrical conductivity of fabrics were discussed. The suitable dopant was selected by comparing the electrical stability of fabric in air and water. The results show that the optimal process parameters are sodium 5-sulfosalicylate (with the concentration of 0.015 mol/L) as the dopant, the concentration of pyrrole of 0.3 mol/L, and the concentration of ferric chloride of 0.4 mol/L. When the polymerization reaction is carried out at 0 ℃ for 4 h, the surface sheet resistance of cotton knitted fabric after polypyrrole coating decreases to 1.4 Ω/□, and the electrical stability of the coated fabric in air is better than that in water.

Key words: functinal textile, cotton knitted fabric, polypyrrole, electrical conductivity, in-situ polymerization, dopants

CLC Number: 

  • TS195.5

Fig.1

Effect of Py concentration on surface sheet resistance and weight gain rate of modified fabrics"

Fig.2

Effect of FeCl3 concentration on surface sheet resistance and weight gain rate of modified fabrics"

Fig.3

Effect of different dopants on surface sheet resistance and weight gain rate of modified fabrics"

Fig.4

Effect of SSANa concentration on surface sheet resistance and weight gain rate of modified fabrics"

Fig.5

Complexing reaction of between SSANa and Fe3+"

Fig.6

Effect of temperature on surface sheet resistance and weight gain rate of modified fabrics"

Fig.7

Effect of reaction time on surface sheet resistance and weight gain rate of modified fabrics"

Fig.8

FT-IR spectra of samples"

Fig.9

X-ray photoelectron spectroscopy of doped fabrics"

Tab.1

Content of S, Cl and N element of doped conductive fabrics"

类别 S2p含
量/%		 Cl2p含
量/%		 N1s含
量/%		 S与N
含量比		 Cl与N
含量比		 S与Cl
之和与
N含量比
SSANa 1.71 1.56 11.28 0.15 0.14 0.29
PTS 1.48 1.66 11.06 0.13 0.15 0.28
AQSANa 2.48 1.02 11.12 0.22 0.09 0.31
Cl- 0.08 2.35 13.58 0.01 0.17 0.18

Fig.10

Effect of different dopants on electrical stability of fabrics. (a) Atmosphere; (b) Water"

Fig.11

Effect of dopants on wetting performance of fabrics"

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