XUE Zhijian, QI Zongneng, WANG Fosong. STUDIES ON POLYANILINE AQUEOUS DISPERSIONS AND ITS BLENDS Ⅱ.UV VIS SPECTRA AND CONDUCTIVITY[J]. Acta Polymerica Sinica, 1997,(4):445-450.
XUE Zhijian, QI Zongneng, WANG Fosong. STUDIES ON POLYANILINE AQUEOUS DISPERSIONS AND ITS BLENDS Ⅱ.UV VIS SPECTRA AND CONDUCTIVITY[J]. Acta Polymerica Sinica, 1997,(4):445-450.DOI:
Doping and depoping process of PAn in the aqueous dispersions was investigated via the UV vis spectra. The PAn HCl started to dedoped when pH=3.5
the dedoping of PAn HCl was completed when pH=6 0. UV Vis spectra of PAn/PVA blend films was also investigated. It was found that when the size of PAn particles was less than 75~100nm
the absorption bands shifted towards shorter wavelengths compared with that of PAn particles larger than 150~250nm. The conductivity of PAn/PVA blend films depended not only on the PAn content but also the aggregated state of PAn in the blend films.The smaller size of PAn particles led to the lower percolation threshold of PAn/PVA blend films.