| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
대학원생 구두발표(발표15분) |
| 제목 |
Order to Disorder Transition Behavior of Block Copolymer Thin Films and Thickness Dependence |
| 초록 |
We investigated thickness dependence on the phase transition behavior in cylinder- and lamella-forming polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) films. An asymmetric wetting condition generates cylindrical and lamellar microdomains oriented parallel to the substrate. We evaluated the thickness dependent phase transition as a function of film thickness using ex-situ grazing incidence small-angle x-ray scattering (GISAXS). The order to disorder transition temperature (TODT) remarkably increases as the film thickness decreases less than a critical thickness above which the TODT of the films are independent film thickness. Our numerical calculation utilizing integral version of self-consistent field theory (SCFT) is qualitatively consistent with the experimental results displaying an increase in TODT of the BCP films. |
| 저자 |
김영식1, 용대성2, 안형주3, 김재업2, 류두열1
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| 소속 |
1연세대, 2UNIST, 3포항가속기(연) |
| 키워드 |
Block copolymer; Phase transition
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| E-Mail |
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