| 학회 | 한국고분자학회 |
| 학술대회 | 2003년 가을 (10/10 ~ 10/11, 부경대학교) |
| 권호 | 28권 2호, p.366 |
| 발표분야 | 기능성 고분자 |
| 제목 | 수소이온전도도 및 메탄올투과도의 관점에서 본 술폰화 폴리이미드막의 구조효과 |
| 초록 | Perfluorinated grafted ionomers have been used as one of potential polymer electrolyte for fuel cell due to their high proton conductivity, excellent mechanical properties and chemical/ electrochemical stability. However, they have crucial drawbacks in practical applications as the electrolyte membrane, which are high methanol permeability over 10-6cm2/s, the steep drop of the proton conductivity at higher temperature and/or low humidity. To overcome described disadvantages of perfluorinated ionomer such as Nafion™, many alternatives have been investigated and studied. Among those, sulfonated polyimide show excellent mechanical/ thermal stability, high proton conductivity and relatively high methanol permeability close to that of Nafion™. In this study, various sulfonated polyimides with the rigid, rod-, grafted- and crosslinked structure were synthesized and characterized structurally by IR, NMR. The formation of the ion cluster within different polymer chains was observed by SAXS. The structural effect on prepared sulfonated polyimides with different chemical structures was examined at the viewpoint of proton conductivity and methanol permeability, related to the formation ion cluster size. |
| 저자 | 이창현1, 박치훈1, 박호범1, 남상용2, 이영무3 |
| 소속 | 1한양대, 2경상대, 3공학(연) |
| 키워드 | fuel cell; DMFC; sulfonated polyimide; |
