| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 봄 (04/23 ~ 04/24, 광주 김대중컨벤션센터) |
| 권호 |
15권 1호, p.18 |
| 발표분야 |
고분자 |
| 제목 |
Preparation and Characterization of Crosslinked Cellulose/Sulfosuccinic acid Membranes as Proton Conducting Electrolytes |
| 초록 |
A series of crosslinked polymer electrolyte membranes were prepared by blending cellulose and sulfosuccinic acid (SA) for fuel cell applications. The crosslinking reaction of membranes occurred via the esterification between OH of cellulose and COOH of SA, as confirmed by FT-IR spectroscopy. Both the ion exchange capacity (IEC) and the proton conductivity increased in proportion to the increase of SA concentrations, due to the increasing portion of charged groups in the membrane. In contrast, the water uptake linearly increased up to 25 wt% of SA concentration, above which it decreased abruptly. The maximum behavior of water uptake may be a result of competitive effect between the increasing number of ionic sites and the increasing degree of crosslinking with the SA concentrations. Wide angle x-ray scattering (WAXS) also showed that the crystalline structures of cellulose disappeared upon the introduction of SA. The mechanical properties of cellulose/SA membranes, i.e. tensile strength at break and Young's modulus showed a maximum at 15 wt% of SA, as revealed by UTM. These membranes exhibited good thermal stability up to 250 oC, as revealed TGA. |
| 저자 |
고주환1, 서진아2, 증효뢰1, 박정태2, 김종학1
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| 소속 |
1연세대 화공생명공학, 2수소연료전지 특성화 사업단 |
| 키워드 |
cellulose; proton conductivity; crosslinked; spectroscopy; polymer electrolyte membrane
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| E-Mail |
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| 원문파일 |
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