| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Microdomain Orientations of PS-b-PMMA to the Controlled Surface Interactions |
| 초록 |
The microdomain orientation in thin films of cylinder- and lamella-forming diblock copolymers, polystyrene-block-poly(methyl methacrylate), was investigated as a function of the film thickness and the composition of random copolymers composed of styrene(S) and methyl methacrylate(MMA), denoted as P(S-r-MMA), that were anchored to the substrate. Using scanning force microscopy and grazing incidence small-angle x-ray scattering, the dependence of the microdomain orientation on film thickness around lattice period (or d-spacing, L0), where the microdomain orientations normal to the film surface could be achieved, showed that the optimal condition for the balanced interfacial interactions (the so-called neutrality in random copolymer) was 0.64 of PS mole fraction for the cylindrical microdomain having narrow compositional range of P(S-r-MMA) from 0.52 to 0.72 of XPS, whereas for the lamella microdomain it was observed at XPS = 0.55 ranging extensively from 0.48 to 0.78. [email protected] |
| 저자 |
함수진1, 신창학1, 김은혜1, 류두열1, Craig. J. Hawker2, Thomas. P. Russell3
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| 소속 |
1연세대, 2Material Research Laboratory, 3Univ. of California |
| 키워드 |
microdomain orientation; PS-b-PMMA
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| E-Mail |
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