| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-콜로이드·계면화학 |
| 제목 |
Novel attraction between particle at oil-water interface and particle in bulk fluid via optical laser tweezers |
| 초록 |
Pickering emulsion has been investigated a lot due to their various industrial applications. Many studies of interactions between particles on interface and between the interface and particles in water were conducted. However, the interaction between particles at the interface and particles in the bulk is barely studied. In our study, we found that an interaction between the particle adsorbed on the interface and the particle in aqueous phase was attractive. We assumed that particle in water forms an induced dipole caused by dipole of an interface attached particle. In this study, the probability of attachments at the interface is quantified according to surface functional groups of particle, electrolyte concentration, and separation between particles. Also, the force between particles was quantitatively measured using optical laser tweezers. This is first study to prove the colloidal dipole-induced dipole interaction. |
| 저자 |
이향미1, 박범준1, 김용우1, 최규환1, 곽상규2, 고은민2
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| 소속 |
1경희대, 2UNIST |
| 키워드 |
Optical laser tweezers; Fluid-fluid interface; Dipole-induced dipole interaction
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| E-Mail |
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