| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
19권 2호 |
| 발표분야 |
우수논문(구두)_박사과정 |
| 제목 |
Tannin-mediated Assembly of Titania Nanocrystals within Highly Porous Polymer Microspheres for Efficient UV Protection |
| 초록 |
We introduce a facile method to prepare multi-layered titanium dioxide nanocrystals (TiO2 NCs) within porous polymer microspheres via tannin-mediated assembly. Highly open porous poly(methyl methacrylate) (PMMA) microspheres (p-MS) are prepared by a single oil-in-water emulsification. Tannic acid, one of polyphenols, is adsorbed onto the surfaces of the p-MS in an aqueous solution, which mediates a spontaneous deposition of colloidal TiO2 NCs on the surfaces of the p-MS via coordination between TiO2 and polyphenol. Multi-layered TiO2 NCs are assembled within the p-MS through layer-by-layer coatings of tannic acid and TiO2 NCs. The multi-layered TiO2-polymer p-MS show an excellent sun protection factor (SPF) for UV light screening applications. We expect that the tannin-mediated assembly can be used to develop functional inorganic-polymer hybrid microspheres in an aqueous milieus. |
| 저자 |
남윤성1, 김수지2, 장지희2, 이준배2, 손호연3
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| 소속 |
1KAIST 신소재공학과 / KAIST Institute for NanoCentury (KINC CNiT), 2코스맥스, 3KAIST 신소재공학과 |
| 키워드 |
tannin; TiO2; porous polymer microspheres; UV protection
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| E-Mail |
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