Green synthesis of nano polypyrrole using urea-hydrogen peroxide

Polypyrrole is one of the most useful conductive polymers, but green synthesis of this polymerhas been restricted until now. The objective of the present study is green synthesis of nanopolypyrrole (PPy) by oxidative polymerization using urea-hydrogen peroxide. It was found thatconductivity and morphology of polypyrrole are highly dependent on the reaction conditionssuch as the molar ratio of oxidized to monomer, temperature, reaction time, kind of solvents, thepresence of a catalyst such as p-toluene sulfonic acid, and specially concentration and additiontime of hydrochloric acid. After understanding the relationship between these factors, we turnedthis enormous variability into improved polypyrrole properties.

Keywords:

Conductive polymer , green chemistry , oxidation polymerization , nano PPy , Ptoluene sulfonic acid