| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 |
25권 2호, p.1771 |
| 발표분야 |
이동현상 (Transport Phenomena) |
| 제목 |
A study on silica nanoparticles (NPs) grafted with poly(2-acrylamido-2-methyl-1-propanesulfonate-co-acrylic acid, AMPS-co-AA) as Pickering emulsifiers of oil and high salinity aqueous solutions |
| 초록 |
One of the important challenges for NPs to be used in down-hole applications is to achieve colloidal stability in high salinity and high temperature conditions of subsurface media. It has been previously shown that a number of functional NPs grafted with anionic poly(AMPS-co-AA) exhibited a remarkable colloidal stability in standard American Petroleum Institute brine (API brine; NaCl 8 wt.% + CaCl2 2 wt.%). However, several important properties of such particles other than the colloidal stability were not studied in a systematic fashion for a wide range of salt concentrations (Cs). Herein, we investigate silica NPs grafted with poly(AMPS-co-AA), SiO2-g-poly(AMPS-co-AA), in NaCl and CaCl2 solutions from low Cs up to extreme salinities. The SiO2-g-poly(AMPS-co-AA) NPs were found to have interfacial activity with the nonpolar oils, allowing the NPs to successfully stabilize oil-in-water emulsion, even the one with a high internal oil phase (up to 80 vol.%). Thus, these NPs may be considered as a useful Pickering emulsifier in high salinity conditions. |
| 저자 |
박현수, 임세형, 양지원, 곽채수, 김지은, 김지은, 이주형
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| 소속 |
명지대 |
| 키워드 |
이동현상 |
| E-Mail |
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| 원문파일 |
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