| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Re-Shaping of Monodisperse Block Copolymer Particles by Solvent Vapor Annealing |
| 초록 |
Non-spherical particles of block copolymers (BCP) are important class of materials. Here, we introduce a re-shaping strategy using solvent vapor annealing (SVA) to transform size controlled, monodisperse BCP spheres into shape-anisotropic particles. Monodisperse BCP spheres with controlled size were produced using Shirasu Porous Glass (SPG) membrane emulsification. Then, successful transformation to non-spherical shapes was conducted using SVA while maintaining the monodispersity. This approach was applicable to various BCPs including polystyrene-block-poly(1,4-butadiene) (PS-b-PB), polystyrene-block-polydimethylsiloxane (PS-b-PDMS), polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) which allowed good control over the aspect ratio (AR) of non-spherical BCP particles. Furthermore, versatility on particle shape was demonstrated by transforming BCP spheres into prolate and oblate shapes. Furthermore, transformation kinetic and the effect of molecular weight were investigated. |
| 저자 |
신재만1, 이영준1, 김민구1, 구강희1, 이준혁1, Kin Liao2, 김범준1
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| 소속 |
1KAIST, 2Khalifa Univ. |
| 키워드 |
block copolymer particle; shape; monodisperse; solvent vapor annealing
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| E-Mail |
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