| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
콜로이드 및 분자조립 부문위원회 I |
| 제목 |
Functional Microgels formed by Complexation between Graphene-Oxide Nanosheets and Hydrophilic Polymers in Double-Emulsion Templates |
| 초록 |
Microgels show fast diffusion kinetics and high reconfigurability because of their size. In a typical procedure of microgel production, water-in-oil emulsion drops containing gel precursors are formed and the precursors are then crosslinked by chemical reactions. However, the reactions are sometimes not biocompatible due to the toxicity of precursor molecules or use of harmful reaction triggers. In this work, we propose a highly biocompatible method for fabricating microgels using complexation of graphene-oxide (GO) nanosheets and hydrophilic polymers. With a microfluidic device, we prepared GO and PVA solution encapsulated water-in-oil-water double-emulsion drops. When the double-emulsion drops were subjected to high osmotic pressure, water was selectively pumped out, leading to gradual concentration and polymer tethered-GO sheets form nematic phase. We show that the multicomponent microgels made from our purposed method show an excellent adsorption capacity for impurities in water. |
| 저자 |
최예훈1, 이상석2, 이동명2, 정현수2, 김신현1
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| 소속 |
1KAIST, 2KIST |
| 키워드 |
Microgels; Graphene oxide; Double-emulsion Drops; Microfluidics; Osmotic pressure
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| E-Mail |
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