Synthesis and Characterization of Photosensitive Poly(imide sulfonates) for Fuel Cell Application  

作　　者：文璞山 LIU Hui KIM Jae Hoon LI Xiangdan LEE Myong-Hoon 

机构地区：[1]Department of Polymer Science and Technology, Research Center for Advanced Materials Development, Chonbuk National University [2]College of Chemistry and Material Science, South-Central University for Nationalities [3]The Graduate School of Flexible and Printable Electronics, Chonbuk National University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2013年第4期635-642,共8页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the New & Renewable Energy R&D Program(2009T100100606) under the Ministry of Knowledge Economy of Korea;the National Research Foundation of Korea (NRF) through the Human Resource Training Project for Regional Innovation

摘　　要：The novel sulfonated polyimide membranes were successfully synthesized by thermal imidization with monomers of 4,4＇-（hexafluoroisopropylidene）diphthalic anhydride （6FDA）, 4,4＇-diamino- diphenyl ether-2,2＇-disulfonic acid （SODA） and 3,3 ＇-diaminochalcone （3DAC）. Photosensitive chalcone moiety was introduced to the main chain of copolymers, and the photocrosslinking of resulting copolymer in aqueous electrolyte was attempted. A series of sulfonated copolyimide precursors containing chalcone functional groups in the main chain were prepared with different sulfonation degrees by controlling the molar ratio of SODA, 6FDA and 3DAC. The polymer membranes were prepared from these sulfonated aromatic precursors by solution casting and subsequent thermal imidization. The crosslinking with UV irradiation was attempted in the presence or absence of distilled water. The characterizations of the resulting membrane such as the ion-exchange capacity, water absorption and ionic conductivity were performed with respect to the copolymer compositions and the photocrosslinking conditions.The novel sulfonated polyimide membranes were successfully synthesized by thermal imidization with monomers of 4,4＇-（hexafluoroisopropylidene）diphthalic anhydride （6FDA）, 4,4＇-diamino- diphenyl ether-2,2＇-disulfonic acid （SODA） and 3,3 ＇-diaminochalcone （3DAC）. Photosensitive chalcone moiety was introduced to the main chain of copolymers, and the photocrosslinking of resulting copolymer in aqueous electrolyte was attempted. A series of sulfonated copolyimide precursors containing chalcone functional groups in the main chain were prepared with different sulfonation degrees by controlling the molar ratio of SODA, 6FDA and 3DAC. The polymer membranes were prepared from these sulfonated aromatic precursors by solution casting and subsequent thermal imidization. The crosslinking with UV irradiation was attempted in the presence or absence of distilled water. The characterizations of the resulting membrane such as the ion-exchange capacity, water absorption and ionic conductivity were performed with respect to the copolymer compositions and the photocrosslinking conditions.

关 键 词：sulfonated polyimide PHOTOSENSITIVE CHALCONE polymer electrolyte membrane fuel cell 

分 类 号：TM911.4[电气工程—电力电子与电力传动]