| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Shape-controlled Reconstruction of Uniform Block Copolymer Particles by Solvent Vapor Annealing |
| 초록 |
Non-spherical colloidal particles of block copolymers (BCP) are important class of materials. We introduce a re-shaping strategy using solvent vapor annealing (SVA) to transform the size controlled, monodisperse BCP spheres into shape-anisotropic particles. Monodisperse BCP spheres in a wide range of particle size were first produced. Then, successful transformation to non-spherical shapes was conducted while maintaining the monodispersity with controlled particle size using SVA. This approach was applicable to various types of 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 allows good control over aspect ratio (AR) of non-spherical BCP particles over wide range. Furthermore, versatility of SVA on particle shape was demonstrated by successfully transforming BCP spheres into various shapes such as prolate and oblate ellipsoids. |
| 저자 |
이영준1, 신재만1, Kin Liao2, 김범준1
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| 소속 |
1KAIST, 2Khalifa Univ. |
| 키워드 |
Block copolymer; BCP particle; solvent annealing; reconstruction
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| E-Mail |
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