Synthesis and properties of polyimide ionomers containing sulfoalkoxy and fluorenyl groups
Synthesis and properties of polyimide ionomers containing sulfoalkoxy and fluorenyl groups
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DOI：
10.1002/pola.20843
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发表时间：
2005-10
期刊：
影响因子：
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通讯作者：
T. Yasuda;K. Miyatake;M. Hirai;M. Nanasawa;Masahiro Watanabe
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文献类型：
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作者：
T. Yasuda;K. Miyatake;M. Hirai;M. Nanasawa;Masahiro Watanabe
合成了一系列含芴基的磺丙基化和磺丁基化聚酰亚胺共聚物SPI-4，研究了烷基侧链对聚酰亚胺电解质膜性能（稳定性、机械强度、吸水率和质子传导率）的影响。SPI-4显示出比主链磺化聚酰亚胺SPI-1好得多的水解稳定性（在100 °C下在10%MeOH水溶液中）。由这些共聚物得到了坚韧、柔性和延展性的膜。在高相对湿度下，所有SPI-4膜均显示出高机械性能（最大应力>34 MPa）和质子传导率（>0.1 Scm−1）。这些性能与全氟磺酸离聚物（Nafion 112）相当，甚至更好。新型聚酰亚胺离聚物已被证明是PEFC和DMFC的聚合物电解质膜的可能候选者。© 2005 Wiley Periodicals，Inc.聚合物科学杂志A部分：聚合物化学43：4439-4445，2005
A series of sulfopropylated and sulfobutylated polyimide copolymers containing fluorenyl groups, SPI-4, were synthesized to investigate the effect of alkyl side chains on the properties (stability, mechanical strength, water uptake, and proton conductivity) of the polymimide electrolyte membranes. SPI-4 showed much better hydrolytic stability (in 10% MeOH aq at 100 °C) than the main chain sulfonated polyimide, SPI-1. Tough, flexible, and ductile membranes were obtained from these copolymers. At high relative humidity all the SPI-4 membranes showed high mechanical properties (>34 MPa of the maximum stress) and proton conductivity (>0.1 Scm−1). These properties are comparable to or even better than those of the perfluorosulfonic acid ionomer (Nafion 112). The new polyimide ionomers have proved to be a possible candidate as polymer electrolyte membrane for PEFCs and DMFCs. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 4439–4445, 2005