含二氮杂萘酮结构磺化聚酰亚胺共聚物的合成及其膜性能研究  

SYNTHESIS AND PROPERTY CHARACTERIZATION OF PHTHALAZINONE-BASED SULFONATED COPOLYIMIDES

作　　者：潘海燕[1] 梁勇芳[1] 李健丰[1] 朱秀玲[1] 蹇锡高[1] 宣根海[1] 

机构地区：[1]大连理工大学化工学院高分子材料系,大连116012

出　　处：《高分子学报》2007年第8期742-745,共4页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号50373005);辽宁省自然科学博士启动基金(基金号20021068)资助项目

摘　　要：将磺化二胺单体4,4′-二(4-氨基苯氧基)联苯-3,3′-二磺酸(BAPBDS),含二氮杂萘酮结构的二胺1,2-二氢-2-(4-氨基苯基)-4-[4-(4-氨基苯氧基)-苯基]-二氮杂萘-1-酮(DHPZDA)和1,4,5,8-萘四甲酸二酐(NTDA)进行缩合聚合反应,通过改变磺化二胺单体BAPBDS的含量,合成了一系列不同磺化度的聚酰亚胺(SPIs).采用FT-IR,1H-NMR表征了聚合物的结构,热重分析仪(TGA)研究了聚合物的耐热稳定性.以间甲酚为溶剂,通过溶液浇铸法成膜研究了该系列聚合物膜的性能.结果表明,与其它磺化聚酰亚胺相比,该系列磺化聚酰亚胺的溶解性以及在高温下(80℃)水解稳定性有较大提高.A new kind of sulfonated copolyimides （SPIs） with higher hydrolysis stability containing both of naphthalene and phthalazinone moieties in polymer＇s main chain were successfully synthesized from 4,4＇-bis（4- aminophenoxy） biphenyl-3,3 ＇-disulfonic acid （BAPBDS）, 1,2-dihydro-2- （4-aminophenyl） -4- [ 4- （4-aminophenoxy） phenyl]-phthalazin-l-one （DHPZDA） and 1,4,5,8-naphthalenetetracarboxylic dlanhydride （NTDA） via direct polymerization, which are potentially utilized as proton exchange membrane in PEMFC. The obtained sulfonated polymers （SPIs） had high molecular weight with the inherent viscosity ranged from 0.41 to 1.00 dL/g in concentrated （95%） su/furic acid when samples varied from 20% to 140% of sulfonation degree. The chemical structure of the SPIs was carefully characterized by FF-IR and 1^H-NMR, and the thermo-behavior of copolymers by thermalgravimeteic analysis （TGA） was also investigated. The yellow, transparent and tough membranes cast from m-cresel solutions of the SPIs were obtained, which were utilized to investigate the physicochemical properties of these new copolymers. The data demonstrated that the membranes had better solubility and hydrolysis stabilities than the other analogeous SPIs.

关 键 词：磺化聚酰亚胺 质子交换膜 二氮杂萘酮 水稳定性 

分 类 号：TQ316.3[化学工程—高聚物工业]