New locally and densely sulfonated poly(ether sulfone)S Were Successfully prepared for fuel cell applications by the nucleophilic substitution of 4,4'-dichlorodiphenylsulfone with 1,2,4,5-tetrakis([1,1'-biphenyl]-2-oxy)-3,6-bis(4-hydroxyphenoxy)benzene and 2,2-bis(4-liydroxyphenyl)hexafluoropropane, followed by sulfonation using chlorosulfonic acid. The polymers gave tough, flexible, and transparent membranes by solvent casting. The large difference in polarity between the locally and densely sulfonated units and hydrophobic units of the polymers resulted in the formation of well-defined phase-separated structures, which induced efficient proton Conduction in a wide range of 30 - 95% RH at 80 degrees C.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据