| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 봄 (04/09 ~ 04/10, 대전컨벤션센터) |
| 권호 |
34권 1호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
SAXS cluster structure and properties of sPEEK/PEI composite membranes for DMFC application |
| 초록 |
SPEEK/PEI composite membranes were prepared to reduce the water uptake and methanol permeability of highly sulfonated PEEK membranes. Incorporation of small amount of PEI reduced the ionic cluster size via electrostatic complex formation between anionic sulfonic group of sPEEK and cationic amine group of PEI and thus affected the membrane properties considerably. The ion cluster size reduced more at higher PEI concentration by SAXS. 1 wt% of PEI addition resulted considerable reduction of water uptake and methanol permeability- water uptake by about 30 % at 60 C and methanol permeability by 85 %. The thermal and mechanical stability were also enhanced by formation of physical crosslinking induced by electrostatic interaction between acid/base polymers. Although the proton conductivity reduced by PEI incorporation as a part of sulfonic acid groups were involved in formation of ionic complex, its reduction was not as much as methanol permeability. |
| 저자 |
민선홍, 김덕준
|
| 소속 |
성균관대 |
| 키워드 |
sPEEK; PEI; conductivity; permeability
|
| E-Mail |
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