| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 가을 (10/07 ~ 10/08, 대구 EXCO) |
| 권호 |
35권 2호 |
| 발표분야 |
대학원생 구두발표 |
| 제목 |
Epitaxial Phase Transition between DG and HEXon Different Pathways in Diblock Copolymer Thin Film |
| 초록 |
Block copolymer self-assembles into various microphase-separated structures, which undergo order-order phase transitions. The phase transition of DG (double gyroid) and HEX (hexagonally packed cylinder) are induced by changing the temperature or by applying the external field. And this transition has been established to follow different mechanisms according to the imposed field. Recently, a new epitaxial transition from DG to HEX has been reported in thin film. The phase behavior in thin film is influenced by the interfacial interaction and the confined geometry. In this study, we investigated the phase transition behavior from DG to HEX transition and vice versa in PS-b-PI thin film. The grain boundary of coexistence phase and transition kinetics were studied by using TEMT and GISAXS, respectively. The phase transition was reversible, but the transition pathway of the two phases influenced their epitaxy as well as the transformation kinetic. |
| 저자 |
정주은1, 박해웅1, 이준영1, 장태현1, Hiroshi Jinnai2
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| 소속 |
1포항공과대, 2Kyoto Institute of Technology |
| 키워드 |
Block copolymer; Phase transition; Thin film; Double gyroid; Hexagonally packed cylinder
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| E-Mail |
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