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 (¹H-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.