| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Effect of Flory-Huggins Interaction Parameter on Aspect Ratio of Shape-Anisotropic Block Copolymer Particle |
| 초록 |
Systematic modulation of shape-anisotropy of block copolymer (BCP) particles into spheroids (prolate and oblate) have received great attention. Herein, we investigate the effect of Flory-Huggins interaction parameter (χ) on aspect ratio (AR) by introducing four different series of BCPs with varying χ values. In this study, polystyrene-b-polybutadiene (PS-b-PB), polystyrene-b-polydimethylsiloxane (PS-b-PDMS), polystyrene-b-poly4-vinylpyridine (PS-b-P4VP), and polydimethylsiloxane-b-poly-2-vinylpyridine (PDMS-b-P2VP) with similar degree of polymerization (N) were prepared for accurate comparison. Lamellae-forming BCPs with higher χ assembled into ellipsoidal particles with more elongation. Similarly, cylinder-forming BCPs with higher χ assembled into flatter convex lens-like particles. There is a difference in the tendency of AR depending on the shape of BCP particles, and it is supported by a theoretical model. |
| 저자 |
이영준1, 구강희1, 신재만1, 이준혁1, Kin Liao2, 김범준1
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| 소속 |
1카이스트, 2Khalifa Univ. |
| 키워드 |
Block copolymer; Block copolymer particle; Anisotropic particle; Self assembly; Flory-Huggins interaction parameter
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| E-Mail |
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