磺化聚苯并咪唑/磺化聚醚砜酸碱复合质子交换膜的制备与表征  

Acid-base composite membranes from sulfonated polybenzimidazole and sulfonated poly(arylene ether sulfone)

作　　者：王迎姿[1,2] 尚玉明[2] 冯少广[2] 董文琦[1,2] 王要武[2] 谢晓峰[2] 吕亚非[1] 

机构地区：[1]北京化工大学新型高分子材料制备与加工北京市重点实验室,北京100029 [2]清华大学核能与新能源技术研究院,北京100084

出　　处：《化工进展》2010年第5期843-846,共4页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(50703021;50973055;50911140287);国家高技术研究发展计划(2008AA03Z205;2007AA05Z146)资助项目

摘　　要：为提高膜的尺寸稳定性和阻醇性能,以磺化聚苯并咪唑(S-PBI)与高磺化度聚醚砜(ABPS)两种聚合物为原料,采用溶液共混的方法,制备了系列酸碱复合质子交换膜。研究了复合膜的甲醇溶胀性、吸水率、甲醇渗透系数、质子传导率随S-PBI含量的变化规律。研究表明,随着S-PBI含量的增加,膜的阻醇性能和尺寸稳定性明显提高;同时,复合膜具有较好的质子传导率,有望应用于直接甲醇燃料电池。Acid-base composite membranes derived from sulfonated polybenzimidazole （S-PBI） and sulfonated poly（arylene ether sulfone） were prepared via solution blend process.Properties of the membranes were characterized in terms of swelling ratio in methanol aqueous solution,water uptake,methanol permeability coefficient and proton conductivity.Results indicated that the introduction of S-PBI reduced the methanol swelling and methanol permeability coefficient of the membranes.Although the proton conductivity decreased with the addition of S-PBI,the composite membrane showed a relatively high proton conductivity with certain S-PBI content at high temperature.Thus,the composite membranes could be used as proton exchange membranes for direct methanol fuel cell applications.

关 键 词：磺化聚醚砜 聚苯并咪唑 质子交换膜 燃料电池 

分 类 号：TB324[一般工业技术—材料科学与工程]