| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 봄 (04/05 ~ 04/07, 대전컨벤션센터) |
| 권호 |
42권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Dynamic Shape-Transforming Particles by Controlled Assembly of Block Copolymers and Stimuli-Responsive Polymer Surfactants |
| 초록 |
Development of shape-changing particles in response to external stimulus has been a long-thought goal for producing bio-inspired, reactive materials. Herein, we report a temperature-driven transformation of the shape and morphology of polymer particles using the assembly of polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) block copolymers (BCPs) and temperature-responsive polymer surfactants, poly(N-isopropylacrylamide) (PNIPAM). The PNIPAM polymers act as temperature-responsive surfactant with the following two important roles. (1) The PNIPAM polymers stabilized the droplets as P4VP-selective surfactant, creating a nearly neutral interface for PS and P4VP domains together with other PS selective surfactants and generating the formation of the anisotropic PS-b-P4VP particles. (2) More importantly, the PNIPAM determined the overall shape and morphology of these two different BCP particles depending on the temperature of the system. |
| 저자 |
구강희1, 이준혁2, 김민구2, 신재만2, 한정훈2, 박찬호2, 이기라3, 장세규4, 김범준2
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| 소속 |
1한국과학기술원(KAIST), 2KAIST, 3성균관대, 4KIST |
| 키워드 |
block copolymer; particle; temperature-responsive; shape transforming
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| E-Mail |
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