Improving the conductivity of polyaniline-coated polyester textile by optimizing the synthesis conditions

Abstract

Conducting polyaniline-coated polyester textiles have attracted much attention due to their wide range of surface resistivity. The surface resistivity depends strongly on the polymerization condition. In this work, polyaniline coated on textile by in situ chemical polymerization method. The influence of substrate modification, synthesis condition, and especially redoping procedure on the surface resistivity of polyaniline-coated textile was investigated and an optimum condition specified. The obtained results indicate that polymerization in an ice-water bath and in a monomer:oxidant:HCl molar ratio equal to 1:1:7 for about 4–6 h decreases the surface resistivity significantly. Furthermore, the experimental results show that etching the surface of textile and redoping procedure with concentrated HCl vapor can decrease the surface resistivity, in a short time.