【作者】 杜立广； 贺高红； 焉晓明； 吴雪梅；

【Author】 DU Li-guang,HE Gao-hong,YAN Xiao-ming,WU Xue-mei (State Key Laboratory of Fine Chemicals,R & D Center of Membrane Science and Technology, Dalian University of Technology,Dalian 116012,China)

【机构】 大连理工大学化工学院精细化工国家重点实验室膜科学与技术研究开发中心；

【摘要】 根据磺化聚芳醚砜酮(SPPESK)的溶解性能,选取DMAc、NMP、DMF和DMSO作为铸膜溶剂,采用浇铸法制备SPPESK质子交换膜。考察了溶剂对SPPESK质子交换膜水吸收率、水溶胀度、质子传导率和离子交换容量(IEC)、甲醇渗透率的影响。H-NMR测试表明DMF与磺酸根有较强的氢键作用,致使膜质子传导率和IEC降低。NMP作为溶剂制得的SPPESK膜具有最高的水吸收率、质子传导率,较低的甲醇渗透率,适宜为SPPESK的铸膜溶剂。更多还原

【Abstract】 Based on the solubility of SPPESK,we chose DMAc,NMP,DMF and DMSO as the solvents of SPPESK to produce proton exchange membranes for DMFC.The effect of solvents on the water uptake,swelling rate,conduction,ion exchange capability（IEC=mmol SO₃ H/g dry membrane） and methanol permeability of SPPESK were investigated.¹H-NMR spectroscopy revealed the information of a strong interaction between SPPESK and DMF.The membrane produced by NMP owned the best water uptake,swelling rate and conduction, lower methanol permeability.The NMP was chose for the solvent of SPPESK to producing proton exchange membrane for DMFC.更多还原