交联型阴离子交换膜的制备与性能研究
关键词 季铵化聚醚砜 阴离子交换膜 氯甲基化 自交联 离子电导率
毕业设计说明书（论文）外文摘要
Title Synthesis and properties of cross-linked anion exchange membranes Abstract
A series of anion-exchange membranes (AEM) based on poly(ether sulfone)s (PSF) were synthesized from difluorodiphenyl sulfone and bisphenol A via high temperature copolymerization, chloromethylation, qurternization and alkalization. The properties of the prepared AEMs such as ion exchange capacity (IEC), water uptake, size change, mechanical property, solubility, ion conductivity and stability were investigated in details. The membrane (CQPSF) using N, N, N’,N’-tetramethylhexyldiamine as the quaternization and cross-linking reagent simultaneously showed self cross-linking structure. Compared with the membrane using trimethylamine as the quarternization reagent, the CQPSF membranes showed relatively better solvent resistance, dimensional stability as well as ion conductivity.
Keywords Quaternary poly(ether sulfone)s; Anion exchange membrane Chloromethylation; Self cross-linking; Ion conductivity
目 次
1 绪论 1
1.1 燃料电池 1
1.2 直接甲醇燃料电池 1
1.3 阴离子交换膜 3
1.3.1 阴离子交换膜需满足的要求 3
1.3.2 阴离子交换膜研究进展 4
1.3.3 聚砜类阴离子交换膜 4
1.4 论文研究意义及实验设计 5
1.4.1 论文研究意义 5
1.4.2 实验设计 5
2 实验部分 6
2.1 实验药品和仪器 6
2.1.1 实验药品 6
2.1.2 实验仪器 7
2.1.3 实验药品的预处理及纯化 7
2.2 自交联型聚芳醚枫类阴离子交换膜的制备 8
2.2.1 聚醚砜的制备 8
2.2.2 PSF的氯甲基化 9
2.2.3 浇膜和季铵化 9
2.2.4 碱化 10
2.3 性能表征 10
2.3.1 聚合物核磁谱图级粘度测试 10
2.3.2 离子交换容量（IEC）的测定 11
2.3.3 吸水率的测定 11
2.3.4 尺寸变化的测定 11
2.3.5 水稳定性及失重的测定 12
2.3.6 离子电导率 12
2.3.7 机械性能测试 12
3 结果与讨论 13
3.1 无规共聚聚芳醚枫的合成 13
3.2 交联型阴离子交换膜的制备 13
3.3 聚醚砜阴离子交换膜的基本性能 14
3.3.1 阴离子交换膜的IEC、尺寸变化及水稳定性 14
3.3.2 阴离子交换膜的吸水率 15
3.3.3 阴离子交换膜的溶胀性能 16
3.3.4 阴离子交换膜的机械强度 17
3.3.5 阴离子交换膜的离子电导率 17
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