| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
대학원생 구두발표 (영어발표, 발표15분) |
| 제목 |
χN effects on Phase behavior of Diblock Copolymers: Composition Fluctuation Inhomogeneity |
| 초록 |
We suggest that the composition fluctuation inhomogeneity at order-to-disorder transition (ODT) of BCP is determined by the thermodynamic segregation power of χN where χ is the Flory-Huggins interaction parameter between two blocks and N is the overall degree of polymerization. For this purpose, a series of symmetric BCPs of polystyrene-b-poly(2-vinlyprydine) (PS-b-P2VP), PS-b-poly(methyl methacrylate) (PS-b-PMMA), and PS-b-poly(n-hexyl methacrylate) (PS-b-PnHMA) with modest molecular weights were prepared to represent the (χN)ODT sequence of (χN)PS-b-P2VP ＞(χN)PS-b-PMMA ＞(χN)PS-b-PnHMA. The latent heat (ΔHODT) at ODTs was estimated by differential scanning calorimetry (DSC) and Porod invariant (Q) at ODTs from the small angle x-ray scattering (SAXS). From these results, the properties of local composition profiles at ODTs are described in terms of (χN)ODT of BCPs. |
| 저자 |
전태석1, 전승배1, 류창열2, 류두열1
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| 소속 |
1연세대, 2Rensselaer Polytechnic Institute |
| 키워드 |
Block Copolymer; Phase behavior
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| E-Mail |
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