| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
고분자합성 |
| 제목 |
Crosslinkable sPPO composite membrane by LbL for DMFC applications |
| 초록 |
Layer-by-layer (LbL) deposition is a very versatile method to prepare very thin polyelectrolyte multilayer composite films. LbL method is often used for the surface property modification of a given polymer film. Here, we prepared multilayered composite PEM by LbL method on the surface of Nafion212. The sulfonated polymer mixture contains highly sulfonated poly(phenylene oxide) (sPPO) and polystyrene copolymer containing azide moiety. Crosslinked composite membrane was prepared by photochemical crosslinking using UV. The composition ratios of polymer layers were identified using H-NMR and FTIR. Also the layer thickness was shown to increase with the concentration of NaCl in the bath. Although the proton conductivity was slightly lower than that of Nafion, a 40% reduction of methanol permeability ultimately leads to an increased overall selectivity. This proves that the UV crosslinking method can be applied to other LbL composite films as well as flat fuel cell membranes. |
| 저자 |
유호연, 조창기
|
| 소속 |
한양대 |
| 키워드 |
membrane; fuel cell; layer by layer
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| E-Mail |
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