| 학회 |
한국공업화학회 |
| 학술대회 |
2016년 가을 (10/26 ~ 10/28, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
20권 2호 |
| 발표분야 |
고분자_포스터 |
| 제목 |
Shape-controlled Janus Particles with pH-Responsive Surfactant Properties |
| 초록 |
Amphiphilic Janus particles can stabilize multiphasic fluids mixtures such as emulsions. In particular, the ability to control the shape and wetting properties of Janus particles provide a powerful strategy to control their surface activity. Herein, polystyrene/poly(2-vinylpyridine) (PS/P2VP) Janus particles were simply produced by oil-in-water emulsion technique, and applied to stabilize emulsions of toluene and water, where the surfactant properties were completely reversible in response to solution pH. One side of Janus particle is composed of hydrophobic styrene, whereas the other side is rich in a pH-sensitive hydrophilic P2VP. Therefore, these Janus particles allowed to stabilize different types of emulsions, and induce phase inversion of emulsions in response to changes in solution pH. Moreover, metal-loaded hybrid Janus particles were demonstrated by incorporating Au, Pd, Pt nanoparticles in the P2VP domain, making the particles useful for nanoreactors and molecule carriers. |
| 저자 |
구강희1, 장세규2, Kin Liao3, 김범준1
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| 소속 |
1KAIST, 2KIST, 3Khalifa Univ. |
| 키워드 |
janus particle; surfactant; pH-responsive; emulsion droplet
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| E-Mail |
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