| 학회 |
한국화학공학회 |
| 학술대회 |
2001년 봄 (04/27 ~ 04/28, 연세대학교) |
| 권호 |
7권 1호, p.57 |
| 발표분야 |
공업화학 |
| 제목 |
은을 함유한 고분자 전해질에서의 기체투과특성에 대한 과도가교의 역할 |
| 초록 |
The interaction of silver cations of AgClO4 or AgBF4 with carbonyl oxygens in poly (2-ethyl-2-oxazoline) (POZ) was characterized to be similar by infrared and Raman spectroscopies. The two silver salts have similar molecular sizes and lattice energies. However, two silver polymer electrolytes showed remarkably different gas transport property. The POZ/AgClO4 membrane showed significantly low gas permeance compared with the POZ/AgBF4 at 1:1 [C=O]:[Ag] mole ratio. The difference in the transport properties has been interpreted by the chain mobility changes upon transient crosslinks of silver cations, associated with the difference in the coordination number of the silver cation, and danglement of heavy anions, which were characterized by the glass transition temperature and intersegmental d-spacing. The model structure calculated by the ab initio method demonstrated the difference in the bond length between the cation and anion in the two polymer electrolytes, despite the very similar lattice energies for two salts. Thus, the gas transport properties were successfully used to monitor the role of transient crosslinks as well as the neighboring counter anions in polymer electrolytes containing silver ions.
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| 저자 |
김종학1, 민병렬2, 김창곤, 원종옥, 강용수
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| 소속 |
1연세대, 2KIST 촉진수송분리막연구단 |
| 키워드 |
polymer electrolytes; silver ions; poly (2-ethyl-2-oxazoline); transient crosslinks
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| 원문파일 |
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