Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (11): 2601.doi: 10.7503/cjcu20180122

• Polymer Chemistry • Previous Articles    

Preparation of Flexible and Conductive Lignosulfonate-polypyrrole Paper by Self-assembly Polymerization

HUANG Wenjing1, DING Zixian1, QIU Xueqing1,2, YANG Dongjie1,*()   

  1. 1. School of Chemistry and Chemical Engineering, Guangzhou 510640, China
    2. State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
  • Received:2018-02-09 Online:2018-11-10 Published:2018-06-04
  • Contact: YANG Dongjie E-mail:cedjyang@scut.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21436004, 21576106) and the Project of Guangdong Province of Science and Technology, China(No.2017B090903003).

Abstract:

Flexible and load-controllable lignosulfonate-polypyrrole conductive paper with high-stability was prepared by self-assembly polymerization method using lignin derived from the pulping liquor as dispersant and dopant. The infrared spectroscopy(IR), scanning electron microscope(SEM), conductivity, tensile strength and electrochemical tests were used to characterize the properties of the conductive paper. The effects of dopants and assembled layers on electrical and mechanical properties of the conductive paper were also investigated. The results showed that the loading amount, conductivity and stability of lignosulfonate-polypyrrole paper were improved with the increase of layers, and the load was linearly correlated with the number of layers. Compared with in-situ polymerization, the conductive paper prepared by self-assembly polymerization had better properties. Lignosulfonate not only played a role as dispersant and dopant but also better improved the comprehensive performance of the conductive paper than hydrochloric and polystyrene sulfonic. More importantly, since lignosulfonate had a three-dimensional network structure and strong interaction with the fibres, the conductive stability under various bending states and the tensile strength of conductive paper were remarkably improved. The oxidation resistance and waterproof of lignosulfonate could also increase the conductive stability of conductive paper in air and moisture.

Key words: Self-assembly polymerization, Lignosulfonate-polypyrrole flexible conductive paper, Number of layer, Conductive stability, Tensile strength

CLC Number: 

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