Abstract
ABSTRACT The oxidative chemical polymerization of p-sulphanilamide was studied in hydrochloric acid solution using sodium dichromate as oxidant at 5°C under nitrogen atmosphere. The effect of hydrochloric acid, sodium dichromate, and monomer concentration on the polymerization reaction was investigated. The orders of the polymerization reactions with respect to hydrochloric acid, sodium dichromate, and monomer concentrations are found to be 0.73, 0.971, and 0.966, respectively. Also, the effect of temperature on the polymerization rate was studied and the apparent activation energy was calculated and its value was found to be 24.291 × 104 J/mol. The characterization of the obtained polymer sample at the optimum conditions was carried out by IR, UV-visible, 1H-NMR, 13C-NMR, X-ray diffraction, electron microscopic, and thermogravimetric analysis. The dielectric and a.c. conductivity were investigated as a function of temperature.
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