邻甲基对苯二酚型磺化聚醚醚砜质子交换膜材料的合成与表征

以3,3′ 二磺酸钠基 4,4′ 二氯二苯砜（SDCDPS）、 邻甲基对苯二酚、 4,4′ 二氯 二苯砜（DCDPS）为原料， 利用亲核缩聚反应, 通过调整磺化单体（SDCDPS）和非磺化单体(DCDPS)的比例与邻甲基对苯二酚共聚， 合成了一系列具有不同磺化度的磺化聚醚醚砜. 红外光谱证实所合成聚合物为目标产物. 发现邻甲基对苯二酚结构单元的存在， 使聚合物具有较高的离子交换容量， 从而使低磺化度的共聚物具有相对高的质子传导率. 该聚合物具有较高的分子量和良好的热稳定性和溶解性.

Synthesis and Characterization of Sulfonated Poly(ether ether sulfone) Copolymers for Proton Exchange Membrane Materials

A series of sulfonated poly(ether ether sulfone) (SMPEES) copolymers were synthesized via the aromatic nucleophilic polycondensation of disodium 3,3′disulfonate 4,4′dichlorodiphenylsulfone(SDCDPS), 4,4′dichlorodiphenylsulfone (DCDPS) and o methylhydroquione. The structure of SMPEES copolymer was confirmed by FTIR. The SMPEES copolymers have high ion exchange capacity (IEC) because of o methylhydroquione itself simple structure, which results in a high proton conductivity in reactively low degree of sulfonation (DS). The copolymers have high molecular weights and exhibit a good thermal stability and solubility.