- Novel cross-linked membranes based on polybenzoxazine and polybenzimidazole containing 4-phenyl phthalazinone moiety for high-temperature proton exchange membrane
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- 论文类型： 期刊论文
- 发表时间： 2017-01-12
- 发表刊物： JOURNAL OF POLYMER RESEARCH
- 收录刊物： SCIE、EI
- 卷号： 24
- 期号： 2
- ISSN号： 1022-9760
- 关键字： Polybenzoxazine; Polybenzimidazole; 4-Phenyl phthalazinone moiety
- 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 4-phenyl phthalazinone-based benzoxazine (Bp) in N-methyl pyrrolidone (NMP), followed by heating to 260 A degrees C. The cross-linking reaction was determined by DSC and gel fraction tests. These copolymer membranes showed excellent comprehensive properties, with high proton conductivity up to 14.7 mS/cm at 160 A degrees C under anhydrous conditions. Besides, the P(PBp-co-PPBI)-30 membrane exhibited excellent mechanical property (approximately 50% improvement in tensile modules and strength compared to the pristine PPBI) and oxidative stability in Fenton's test (remaining intact after 226 h). This study proved that using benzoxazine as a cross-linking agent is a promising method for improving the properties of proton exchange membranes (PEMs).
