| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
콜로이드 및 분자조립 부문위원회 I |
| 제목 |
In-situ Interfacial Coacervation of Silica Nanoplatelets with Polymers for Production of Structrually Stable Macroemulsion Drops |
| 초록 |
We introduce a novel interfacial structure which is engineered by in-situ coacervation of silica nanoplatelets (SiNPs) and polyacrylic acid (PAA). For this, we synthesized SiNPs by silicification in β-sheet stuructured polypeptide template. To give controlled wettability to SiNPs, we grafted 3-aminopropyltriethoxysilane (APTES) and hexyltrimethoxysilane (HTMS) through silane coupling reactions. Modification of SiNPs led to controlled wettability depending on the concentration of organosilanes. Thanks to high adhesion energy of SiNPs, monodisperse macroemulsion drops could be produced in a capillary-based microfluidic device. The interfacial structure could be engineered by controlling the electrostatic coacervation of amine-functionalized SiNPs and carboxylic acid groups of PAA. The morphology of coacervate membrane was directly observed via CLSM analysis. The macroemulsion with this coacervate membrane exhibited excellent storage stability without any coalescence and coagulation. |
| 저자 |
김하정, 박대환, 성민철, 김진웅
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| 소속 |
성균관대 |
| 키워드 |
nanoplatelets; complex coacervation; Pickering emulsions; microfluidics
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| E-Mail |
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