Abstract
Polyaniline p-toluenesulfonate (PATS) was synthesized by the electrochemical technique from 0.2 M aniline in 1:99 water/acetonitrile solution containing 0.1 M tetraethylammonium p-toluenesulfonate (TEATS) as supporting electrolyte. Following the polarographic and cyclic voltammetry measurements, the values of the half-wave potential, transfer coefficient and number of electrons were measured to be 516 mV, 0.49, and 1, respectively. The results of TGA and DSC showed the the weight loss was most rapid in the temperature range from 553 to 653 K, and the maximum value of the reaction rate was 0.23 mg/min at 611 K. The electrical conductivity of PATS was measured in the temperature range from 123 to 298 K. From the plot of resistivity vs 1/T, E{sub a} was obtained to be 0.038 eV. From the temperature dependence of the conductivity and ESR measurements, it is suggested that the conduction mechanism for PATS is possibly a small polaron hopping conduction.
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