Amir Abdolmaleki - Department of Chemistry, Isfahan University of Technology
Majid Malek - Department of Chemistry, Isfahan University of Technology

For the first time, a high molecular weight sulfonated polyoxadiazole copolymer containing hydroxyl group has been synthesized at high temperatures and very short reaction time, by a single-step method based on solution polycondensation reaction of non-sulfonated dicarboxylic acids and hydrazine sulfate in polyphosphoric acid. Copolymer with a high conversion to oxazole group as well as good sulfonation level has been obtained. The structure of the polymer was characterized by FT-IR and 1H-NMR. Surface morphology analysis performs using FE-SEM. This copolymer exhibited high thermal stability that confirmed with TGA. A membrane was prepared by solution casting and show good proton conductivity.

Polyoxadiazole, Sulfone, Hydroxyl group, Proton Exchange Membrane, Heat resistance