| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 가을 (10/08 ~ 10/09, 광주과학기술원 오룡관) |
| 권호 |
34권 2호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
SAXS Cluster Structure and Properties of sPEEK/PEI Composite Membranes for DMFC Applications |
| 초록 |
SPEEK/PEI composite membranes were prepared to reduce the water uptake and methanol permeability of highly sulfonated PEEK membranes (＞ 65%). Incorporation of small amounts of PEI reduced ionic cluster size via electrostatic complex formation between anionic sulfonic groups of the sPEEK and the cationic amine groups of the PEI, and thus affected membrane properties considerably. Ion cluster size decreased with increasing PEI concentration per small angle X-ray scattering pattern. The thermal and mechanical stabilities were also enhanced by formation of physical cross-linking induced by electrostatic interactions between acid/base polymers. Although proton conductivity was also reduced by PEI incorporation as a part of the sulfonic acid groups involved in ionic complex formation, its effect on proton conductivity was not as strong as on methanol permeability. |
| 저자 |
민선홍, 김덕준
|
| 소속 |
성균관대 |
| 키워드 |
dmfc; conductivity; methanol permeability
|
| E-Mail |
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