Abstract

The conductivity of polyaniline (PANI) hydrochloride was measured in situ during successive temperature cycles from room temperature to 85, 115, 146 and 179 °C. FTIR spectroscopy, gel-permeation chromatography and X-ray diffraction assessed the changes in polymer structure after each run. The conductivity ageing of PANI in terms of deprotonation, degradation and crystallinity reduction is discussed. The behaviour of PANI in compressed pellets and as powders is compared.

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