| 학회 |
한국재료학회 |
| 학술대회 |
2019년 가을 (10/30 ~ 11/01, 삼척 쏠비치 호텔&리조트) |
| 권호 |
25권 2호 |
| 발표분야 |
특별심포지엄9. 여성위원회 특별세션-오거나이저:윤희숙(KIMS) |
| 제목 |
Interfacial rheological study on interfacial adsorption-aggregation-desorption of mineral particles with surfactants |
| 초록 |
Interfacial behavior of particles in a multicomponent system is necessary to understand to improve or design a new material. This talk will be focused on interfacial layer formation of particles for oil-water emulsion system and its emulsion stabilization effect. Interfacial shear modulus of oil-water interface was measured under the well-controlled loading of surfactant in order to investigate interfacial localization, adsorption, aggregation, and desorption of particles in the presence of surfactant, especially tested with natural clay particles by natural abundance. Depending on the balance of wetting property of particles between oil and water, localized particles responded to surfactant differently depending on ionic characteristics of surfactant. Natural clay particles responded rapidly to surfactants and aggregated. Soon particle aggregates were enhanced to desorb to sub-phase as the concentration of surfactant increases. Organically surface-modified clays relocalized to the interface with the presence of surfactant first and slowly desorbed to the sub-phase. The combined structure of particles with surfactant induce a significant stabilization behavior to the emulsion. This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIP) (No. 2016R1E1A1A01942362) |
| 저자 |
홍정숙 |
| 소속 |
서울대 |
| 키워드 |
Interfacial layer; Clay; Surfactant; Interfacial rheology
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| E-Mail |
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