Abstract
A conductive polymer composite of polypyrrole (PPy) and poly(p-phenylene terephthalamide) (PPTA) was prepared by the electropolymerization of pyrrole on an electrode covered with PPTA film prepared by the electrodeposition of PPTA polyanion in dimethylsulfoxide (DMSO) as reported in our previous paper. The supporting electrolyte used during electropolymerization of pyrrole was tetraethylammonium p-toluensulfonate (TsO−). Treatment of the PPy(TsO−)/PPTA composite with hydrochloric acid provided a more thermally stable and mechanically improved composite film than that untreated with hydrochloric acid. The effect of HCl-treatment for single PPy(TsO−) was investigated by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction measurement. XPS proved that the dopant of p-toluensulfonate anion was partly exchanged for chlorine anion. X-Ray diffraction proved that the interplanar distance of PPy molecules and intercalation layer thickness decreased with hydrochloric acid treatment. These results led us to consider that improvement of the composite film by the HCl-treatment is mainly attributable to structural change in poly(pyrrolylium anion).
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Koga, K., Iino, T., Ueta, S. et al. Effects of Dopants on the Structure and Properties of Electroconductive Composite Film of Polypyrrole and Aramid. Polym J 21, 499–504 (1989). https://doi.org/10.1295/polymj.21.499
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DOI: https://doi.org/10.1295/polymj.21.499
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