| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터) |
| 권호 |
38권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Synthesis and Characterization of Poly(arylene ether sulfone) Anion Exchange Membranes Containing Tetra-Imidazolium Hydroxides on Fluorenyl Units |
| 초록 |
Anion exchange membranes of poly(arylene ether sulfone) containing imidazolium hydroxide-functionalized fluorenyl groups were synthesized by sequential polycondensation, chloromethylation, substitution with imidazolium and ion exchange. They showed elevated molecular weight, high solubility in polar aprotic solvents and strong chemically and thermally stability in comparison to alkyl quaternary ammonium-functionalized polymers. Different levels of substitution and ion exchange were tested; the resulting ionomer membranes showed high ion exchange capacities of up to 1.96 mmol g-1. The imidazolium-functionalized copolymer membranes showed lower water affinity and excellent chemical stability in alkaline conditions. They exhibited hydroxide conductivity above 10−2 S cm−1 at room temperature and excellent chemical stability for up to seven days without significant losses of ion conductivity. |
| 저자 |
Hossain, 임영돈, 이순호, 장호현, 최성영, 김환기
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| 소속 |
건국대 |
| 키워드 |
Anion exchange membrane; Imidazolium; Polycondensation; Chemical stability; Ion conductivity
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| E-Mail |
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