Novel cross-linked membranes based on polybenzoxazine and polybenzimidazole containing 4-phenyl phthalazinone moiety for high-temperature proton exchange membrane
作者： Cheng Liu , Xin Wang , Yuemin Li , Shouhai Zhang , Jinyan Wang
DOI: 10.1007/S10965-016-1173-4
关键词: Conductivity 、 Copolymer 、 Proton exchange membrane fuel cell 、 Materials science 、 Proton 、 Moiety 、 Polymer chemistry 、 Anhydrous 、 Ultimate tensile strength 、 Membrane
摘要: Here, we report a series of novel PA-doped cross-linked benzoxazine-polybenzimidazole copolymer membranes. These membranes were obtained by mixing PBI containing 4-phenyl phthalazinone moieties (PPBI) and phthalazinone-based benzoxazine (Bp) in N-methyl pyrrolidone (NMP), followed heating to 260 °C. The cross-linking reaction was determined DSC gel fraction tests. showed excellent comprehensive properties, with high proton conductivity up 14.7 mS/cm at 160 °C under anhydrous conditions. Besides, the P(PBp-co-PPBI)-30 membrane exhibited mechanical property (approximately 50% improvement tensile modules strength compared pristine PPBI) oxidative stability Fenton’s test (remaining intact after 226 h). This study proved that using as agent is promising method for improving properties exchange (PEMs).
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