| 학회 |
한국고분자학회 |
| 학술대회 |
2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 |
29권 2호, p.739 |
| 발표분야 |
연료전지와 고분자 재료 |
| 제목 |
Synthesis and Characterization of Novel Photosensitive Sulfonated Polyimides for Fuel Cell Application |
| 초록 |
The sulfonated polyimide copolymers as membrane materials used in polymer electrolyte membrane fuel cell (PEMFC) have a common disadvantage of poor water stability when soaked in water. The objective of this study was to improve the water sorption and mechanical stability of sulfonated polyimide copolymers by introducing a photocrosslinkable moiety in the main chain. The novel photosensitive sulfonated polyimides were successfully synthesized by copolymerization of 4,4’-(hexafluoroisopropylidene)diphthalic anhydride (6FDA), 4,4’-diaminodiphenyl ether-2,2’-disulfonic acid (SODA) and 3,3’-diaminochalcone (3DAC) as a photosensitive unit. A series of sulfonated polyimides were prepared with different sulfonation degrees by controlling the molar ratio of SODA to 6FDA and 3DAC. The chemical structures of copolymers were characterized by 1H-NMR and FT-IR spectroscopies, and the sulfonation degree was determined by elemental analysis. The polymer membranes were prepared by solution casting method and crosslinking with UV irradiation was attempted. The result of the characterizations including the ion-exchange capacity, water sorption, proton conductivity and tensile measurement will be presented with respect to the photocrosslinking degree and the copolymer compositions. |
| 저자 |
Hui Liu, Xiang Dan Li, Zhenxin Zhong, Guang Jin, 이명훈
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| 소속 |
전북대 |
| 키워드 |
Photosensitive; Sulfonated Polyimide; Fuel Cell
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| E-Mail |
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