摘要
Sulfonated polyether ether ketone (SPEEK) with variou s degree of sulfonation (DS) were synthesized by reaction of PEEK with sulfo nic acid as sulfonating agent and solvent.Their proton conductivity and methanol pe rmeability as a function of the degree of sulfonation were investigated.For 46 .71% DS,proton conductivity was 1.68×10 -2S/cm at 80℃ and 4.25×10 -2S/cm at 100℃,which is closed to or superior to that of Nafion 115 me mbrane at the same conditions.Methanol permeability of SPEEK was considerable s maller than that of Nafion 115 membrane.Because of their high conductivity and low methanol permeability,SPEEK membranes appear to be excellent candidate for use in DMFC applications.
Sulfortated polyether ether ketone (SPEEK) with various degree of sulfonation (DS) were synthesized by reaction of PEEK with sulfonic acid as sulfonating agent and solvent. Their proton conductivity and methanol permeability as a function of the degree of sulfortation were investigated. For 46.71% DS, proton conductivity was 1.68 X 10(-2) S/cm at 80degreesC and 4.25 x 10(-2) S/cm at 100degreesC, which is closed to or superior to that of Nafion(R) 115 membrane at the same conditions. Methanol permeability of SPEEK was considerable smaller than that of Nafion(R) 115 membrane. Because of their high conductivity and low methanol permeability, SPEEK 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3期452-455,共4页
Acta Polymerica Sinica
基金
国家自然科学基金 (基金号 2 9976 0 33)
科技部"973"计划 (项目号G2 0 0 0 0 2 6 4)
天津市自然科学基金(基金号 0 2 36 0 70 11)资助项目
