| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Stimuli-Responsive, Shape-Transforming Nanostructured Block Copolymer Particles |
| 초록 |
Recently, colloidal particles that exhibit real-time tailored properties in response to external stimulus have recently been in the spotlight due to their diverse range of applications. Herein, we developed a simple and practical method for producing colloidal particle with temperature-driven transformation of shape and morphology via temperature-dependent assembly of polystyrene-b-poly(4-vinylpyridine) block copolymer and poly(N-isopropylacryamide) (PNIPAM) in an chloroform-in-water emulsion. Depending on the surrounding temperature, convex lens-shaped particle and pupa-like particle can be prepared by precise positioning of PNIPAM. At the lower temperature than LCST of PNIPAM, PNIPAM was dissolved from chloroform to water, producing convex lens-shaped particles with vertical cylinders. In contrast, the PNIPAM was localized preferentially in the P4VP domains in chloroform when the temperature is higher than LCST of PNIPAM, producing pupa-like particles with axially stacked lamellar. |
| 저자 |
이준혁1, Kin Liao2, 김범준3
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| 소속 |
1KAIST, 2Khalifa Univ., 3한국과학기술원 |
| 키워드 |
polymer; block copolymer; colloid
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| E-Mail |
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