고온 PEMFC용 메틸렌 사슬을 포함하는 폴리벤즈이미다졸 랜덤공중합체의 합성과 특성 분석 = Synthesis and Characterization of Polybenzimidazole Random Copolymers Containing Methylene Chain for High Temperature PEMFC

다국어 초록 (Multilingual Abstract)

In this study, we prepared the modified PBI random copolymer to reduce the problems of the pristine PBI about low solubility and proton conductivity.
The random copolymer was synthesized from suberic acid, 5-aminoisophthalic acid, and 3,3’-diaminobenzidine to obtain X1Y9, X1Y1, X9Y1. Then, the membrane was fabricated by using solvent casting method with methanesulfonic acid at 140℃. Subsequently, the membrane was doped with phosphoric acid at 40℃.
The chemical structure of the polymers was characterized by FT-IR. In addition, the physiochemical properties of the PBI were investigated by TGA, oxidative stability, acid uptake. Finally, the proton conductivity was measured at 100-180℃ without humidification. As the result, X1Y9 PBI random copolymer membrane showed higher conductivity.

참고문헌 (Reference)

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