Abstract:

In order to improve the conductivity of polyaniline/ wool composite conductive fabric, polyaniline (PANI) was deposited on the surface of wool fabric in one step by in-situ polymerization using carboxylic acid and hydrochloric acid as doping acid. The influence of CTS dosage on the structure and electrical conductivity of composite fabrics was investigated by field emission scanning electron microscopy, X-ray photoelectron spectroscopy and four probes. The micro motion process of aniline adsorption was simulated by molecular simulation, and the micro mechanism of CTS enhancing the conductivity of PANI/ wool composite fabric was further studied. The results indicate that the conductivity
of PANI/ CTS/ wool composite conductive fabric reaches 11. 32 S/ cm with addition of 2. 05% (o. w. f) of CTS. Non-uniform electric field distribution on the surface of keratin molecules leads to non-uniform adsorption of aniline, while the amino protonation of CTS contributes to aniline adsorption in the weak current field, leading to more overall adsorption of aniline, better uniformity, and more uniform and dense PANI layer by polymerization, which improves the conductivity of the composite fabrics.

Key words: polyaniline/ chitosan/ wool composite fabric, in-situ polymerization, conductivity, aniline adsorption molecular simulation