用于燃料电池的磺化聚砜质子交换膜的性能研究  

Properties of sulfonated polysulfone proton exchange membranes for fuel cells

作　　者：乔宗文 QIAO Zong-wen(School of Chemical Engineering,Shaanxi Institute of Technology,Xi’an 710300,China)

机构地区：[1]陕西国防工业职业技术学院化工学院,陕西西安710300

出　　处：《现代化工》2020年第4期153-157,共5页Modern Chemical Industry

基　　金：陕西省自然科学基金(青年)项目(2019JQ-927);2018年西安市科协青年人才托举计划项目(2018-09);陕西国防学院科研计划项目(Gfy-18-04)

摘　　要：以聚砜为基础,通过在主链引入可交换氯制备氯甲基化聚砜(CPS),氯甲基分别与1,2-二羟基苯-3,5-二磺酸钠(BDS)和2-萘酚-6,8-二磺酸钾(NSK)反应,制备了苯磺酸型磺化聚砜PS-BS和萘磺酸型磺化聚砜PS-NS,并通过FT-IR和HNMR对其化学结构进行表征。采用溶液浇注的方法制备了PS-BS和PS-NS薄膜,探索了功能聚合物PS-BS和PS-NS结构与性能之间的关系。结果表明,PS和PS-NS膜在高吸水率下仍能保持很好的尺寸稳定性,在相同的条件下(离子交换容量和温度),PS-BS膜的尺寸稳定性更加优越。PS-BS和PS-NS质子交换膜都具备良好的阻醇性能。Chloromethylated polysulfone( CPS) is prepared by grafting exchangeable chlorine onto the main chain of polysulfone.PS-BS( benzene sulfonic acid type sulfonated polysulfone) and PS-NS( naphthalene sulfonic acid type sulfonated polysulfone) are prepared by the reaction of CPS with disodium 1,2-dihydroxybenzene-3,5-disufonate and dipotassium 2-naphthol-6,8-disulfonate,respectively.Chemical structure of PS-BS and PS-NS is characterized by Fourier transformed infrared( FT-IR) and nuclear magnetic resonance(~1 H-NMR).PS-BS and PS-NS membranes are fabricated by solution casting method. The relationship between structure and properties of both PS-BS and PS-NS is explored.Results show that PS-BS and PS-NS proton exchange membranes( PEMs) can maintain excellent dimensional stability under a high water absorption rate. Compared to PS-NS PEM,PS-BS PEM has better size stability at the same ion exchange capacity and temperature.Both PS-BS and PS-NS PEMs exhibit outstanding anti-methanol permeability.

关 键 词：氯甲基化聚砜 萘磺酸 苯磺酸 侧链 

分 类 号：O631[理学—高分子化学]