| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 봄 (04/12 ~ 04/13, 제주 ICC) |
| 권호 |
32권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Enhanced molecular sieving carbon membranes rendered from two-step pyrolizing process |
| 초록 |
Carbon molecular sieve membranes (CMSMs) are very promising materials in the field of gas separation, both in terms of separation properties (permeability and selectivity) and stability (thermal and chemical). Until now, various polymeric precursors were attempted to obtain higher performance CMSM membranes. Here, we introduced another class of polymeric precursors, hydroxyl containing polyimide (HPIs). These polymers can easily be fabricated thermal imidization method. After then, HPIs were rearranged to more rigid polybenzoxazoles(PBOs) at near 450 oC proposed by many researchers. This thermal rearrangement reaction can make high microcavity in polymer matrix by CO2 evolution during these temperature ranges. After PBO conversion process, they were pyrolyzed up to 600 and 800 oC during 1 h. Gas separation performance of CMSMs rendered by two-step pyrolyzing process were tested by constant volume time-lag method in addition to various thermal and mechanical characterization method. |
| 저자 |
정민수1, 정철호1, 김근영1, 한상훈1, 박호범2, 이영무3
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| 소속 |
1한양대, 2Univ. of Texas at Austin, 3Dept of Chemical Engineering |
| 키워드 |
기체분리; 탄소분자체막; 폴리벤즈옥사졸; 폴리이미드
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| E-Mail |
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