磺化聚芳醚酮砜/聚芳醚砜噁二唑复合型质子交换膜的制备与性能  

Preparation and Performance of Sulfonated Poly(aryl ether ketone sulfone)/Poly(aryl ether sulfone oxadiazole) Composite Proton-exchange Membranes

作　　者：马丽[1] 程海龙[1] 徐晶美[1] 王哲[1,2] 

机构地区：[1]长春工业大学化学工程学院,长春130012 [2]长春工业大学材料科学高等研究院,长春130012

出　　处：《高等学校化学学报》2014年第3期639-644,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:51273024;51303015);吉林省教育厅基金(批准号:2012103)资助~~

摘　　要：为了降低质子交换膜（PEM）的甲醇渗透系数和改善PEM在中高温（80-120℃）时的质子传导率,以自制的磺化度（ SD）为100%的磺化聚芳醚酮砜（ SPAEKS）与聚芳醚砜噁二唑（ PAESO）为原料,采用溶液共混法制备了SPAEKS/PAESO复合膜,并用傅里叶变换红外光谱（ FTIR）和热重分析（ TGA）对其进行了表征.结果表明,该复合膜具有较好的化学稳定性和热稳定性.扫描电子显微镜（ SEM）照片显示,复合膜具有较好的致密结构,其甲醇渗透系数为3.9×10^-7-6.6×10^-7 cm2/s,低于SPAEKS的8.7×10^-7 cm2/s.在100℃时复合膜的质子传导率达到0.074 S/cm,高于SPAEKS膜的0.066 S/cm.A serious of sulfonated poly（ aryl ether ketone sulfone）/poly（ aryl ether sulfone oxadiazole） com-posite membranes were prepared by solution blended method, to improve the performance of membranes for using in the condition of high-middle temperature （ 80-120 ℃） . These prepared membranes were characte-rized by FTIR spectroscopy and thermo gravimetric analysis（ TGA） , and exhibited high thermal stability and good chemical stability. The SEM images showed that the composite membranes had compact structure. The composite membranes had low methanol diffusion coefficient properties（3. 9×10^-7-6. 6×10^-7 cm2/s）, which were better than 8. 7×10^-7 cm2/s of SPAEKS. Although the composite membranes displayed lower proton con-ductivities than the pure copolymer membranes at room temperature, the presence of nitrogen heterocyclic led to an improvement in high-temperature conductivity. The proton conductivity of SPAEKS/PAESO was found to be 0. 074 S/cm at 100 ℃, which was higher than 0. 066 S/cm of SPAEKS.

关 键 词：氮杂环 噁二唑 复合膜 质子传导率 

分 类 号：O631[理学—高分子化学]