Synthesis and characterization of novel cardo poly(aryl ether sulfone) bearing zwitterionic side groups for proton exchange membranes
Synthesis and characterization of novel cardo poly(aryl ether sulfone) bearing zwitterionic side groups for proton exchange membranes
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带有两性离子侧基的质子交换膜新型cardo聚芳醚砜的合成与表征
DOI：
10.1016/j.ijhydene.2011.01.144
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发表时间：
2011-05-01
影响因子：
7.2
通讯作者：
Li, Shenghai
中科院分区：
文献类型：
--
作者：
Zhang, Qiang;Zhang, Suobo;Li, Shenghai
通过仲胺型双酚单体与4，4 ′-双酚和4，4 ′-二氯二苯砜的共缩聚反应，再与2-溴乙磺酸钠反应，合成了一系列新型的含两性离子基团的磺化聚芳醚砜（[-CH（2）CH（2）CH（2）CH（2）N（+）CH（3）（CH（2）CH（2）SO（3）（-））（2））。所得共聚物均能通过简单的溶液浇铸坚韧膜。离子交换容量（IEC）值的调查表明，每个铵基团与一个磺酸根基团相互作用。与IEC值相近的侧链型磺化聚芳醚砜相比，由于分子间相互作用较强，链的堆积密度增加，聚合物膜具有较低的吸水率和溶胀比，以及较好的氧化稳定性。带有两性离子基团的聚合物膜在芬顿试剂中于80 ℃下保持完整20 h。此外，在相同的测量条件下，这些膜表现出比侧链型磺化聚合物膜更高的质子传导率。版权所有（C）2011，氢能出版有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
A novel series of sulfonated poly(aryl ether sulfone)s with zwitterionic groups ([-CH(2)CH(2)CH(2)N(+)CH(3)(CH(2)CH(2)SO(3)(-))(2))) have been prepared by the copolycondensation of a secondary amine-containing biphenol monomer with 4,4'-biphenol and 4,4'-dichlor-odiphenylsulfone, and this was followed by the reaction with sodium 2-bromoethanesulfonate. All the resulting copolymers can form uniform and tough membranes by simple solution casting. The investigation of ion exchange capacity (IEC) values indicated that each ammonium group interacted with one sulfonate group. Because of strong intermolecular interaction, the increased packing density of chain formed that resulted in polymer membranes with lower water uptake and swelling ratio, and better oxidative stability compared with side-chain-type sulfonated poly(aryl ether sulfone)s with the close IEC values. The polymer membranes bearing zwitterionic groups kept intact in Fenton's reagent at 80 degrees C for 20 h. Furthermore, these membranes demonstrated higher proton conductivity than the side-chain-type sulfonated polymer membranes at the same measurement conditions. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.