| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 봄 (04/09 ~ 04/10, 대전컨벤션센터) |
| 권호 |
34권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Fluorinated Aromatic Polyethers containing Crosslinking Moiety for Proton Exchange Membranes |
| 초록 |
The crosslinkable moiety of the copolymers introduced into the polymer main chain and the regulation of the crosslinking density can be controlled by the molar ratio of crosslinking agent. Crosslinked membranes were prepared by thermal curing, and the membranes formed crosslinked network structure by covalent bonds. The thermal properties of the crosslinked membranes were characterized by TGA and DSC. The thermal properties of the membranes increased with increasing the molar ratio of crosslinking agent. Gel fraction was evaluated in order to measure the crosslinking density. The crosslinked network structure suppressed the water uptake and swelling of the crosslinked membrane. The proton conductivity (0.047 0.123 S/cm) and methanol permeability (8 × 10-8 101 × 10-8 cm2/s) of the membranes also decreased with increasing crosslinking moiety because crosslinking reduces the size of the ionic channels, resulting in the suppressed transport of protons and methanol. |
| 저자 |
정명환, 이관수, 이재석
|
| 소속 |
광주과학기술원 |
| 키워드 |
crosslinking; proton exchange membrane; fluoropolymer; direct methanol fuel cell; proton conductivity
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| E-Mail |
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