| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Homopolymer induced Ordering Transition ofClosed-loop Block Copolymer |
| 초록 |
The phase behaviors of binary mixtures of a block copolymer and homopolymer have been of great interests due to their effective allowance of various ordered structures or disordered state by the relative composition and the degree of miscibility between two. In this study, the phase behavior for the binary mixtures of a PS-b-PnPMA and homo PS was investigated by depolarized light scattering and SAXS as a function of amount of PS. A homopolymer-free PS-b-PnPMA showed the entirely disordered state within experimental temperature range from the glass transition temperature (Tg) to the thermal degradation temperature (Td). By adding PS to this PS-b-PnPMA, the closed-loop phase behavior was observed for the binary mixtures where no macrophase separation occurred. With increasing molecular weight (chain length) of PS, the ordered range of the closed-loop extended remarkably and a critical amount of PS increased. ([email protected]) |
| 저자 |
김은혜1, 류두열1, 안형주1, 황성욱1, 주원철2, 김진곤2, 임규현3, 장태현3
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| 소속 |
1연세대, 2포항공과대, 3포항공대 |
| 키워드 |
Closed-loop; phase behavior; block copolymer; mixture
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| E-Mail |
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