摘要
Sulfonated phenolphthalein poly(ether sulfone) (SPES C) with various sulfonation degree were synthesized by reaction of PES C with sulfonic acid as sulfonating agent and solvent.Their proton conductivity and methanol permeability as a function of the degree of sulfonation were investigated.For 70 21% degree of sulfonation,proton conductivity was 3 45×10 -2 S/cm at 100℃,which is closed to or superior to that of Nafion 115 membrane at the same conditions (4 19×10 -2 S/cm).Methanol permeability of SPES C was considerable smaller than that of Nafion 115 membrane.Because of their high conductivity and low methanol permeability,SPES C membranes appear to be excellent candidate for use in DMFC applications.
Sulfonated phenolphthalein poly(ether sulfone) (SPES-C) with various sulfonation degree were synthesized by reaction of PES-C with sulfonic acid as sulfonating agent and solvent. Their proton conductivity and methanol permeability as a function of the degree of sulfonation were investigated. For 70.21 % degree of sulfonation, proton conductivity was 3.45 x 10(-2) S/cm at 100degreesC which is closed to or superior to that of Nafion(R) 115 membrane at the same conditions (4.19 x 10(-2) S/cm). Methanol permeability of SPES-C was considerable smaller than that of Nafion(R) 115 membrane. Because of their high conductivity and low methanol permeability, SPES-C membranes appear to be excellent candidate for use in DMFC applications.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2003年第4期465-468,共4页
Acta Polymerica Sinica
基金
国家自然科学基金 (基金号 2 99760 3 3)
科技部"973"计划 (项目号G2 0 0 0 0 2 64 )
天津市自然科学基金(基金号 0 2 3 60 70 11)资助项目
关键词
磺化酚酞型聚醚砜
制备
甲醇
透过率
热塑性功能材料
燃料电池
质子交换膜
导电性能
direct methanol fuel cell
sulfonated phenolphthalein poly(ether sulfone) proton exchange membranes
proton conductivity
methanol permeability
