| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터) |
| 권호 |
38권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Preparation of mesoporous silica particles with carbon-coated pore walls: selective grafting of polyacrylonitrile onto the inner surface of a mesoporous silica particle and carbonization |
| 초록 |
We prepared mesoporous silica particles with inner surfaces coated with carbonaceous materials. A functional mesoporous silica particle (FSP) having methoxy urethane moieties tethered to the pore wall was synthesized by the template method from tetraethoxysilane (TEOS) and an amphiphilic organotriethoxysilane bearing a thermally reversible urethane bond. The surfactant template molecules in the pores were extracted in methanol in the presence of HCl. An atom transfer radical polymerization (ATRP) initiator was selectively introduced onto the inner surface by the reaction of 2-hydroxyethyl-2-bromo-2-methylpropanoate with the methoxy urethane group. The ATRP of acrylonitrile was carried out inside the pores to yield polyacrylonitrile (PAN) grafted to the pore wall. Subsequent pyrolysis of PAN resulted in the formation of mesoporous silica particles with carbon-coated pore walls. The property changes in the inner surface were investigated by analyzing the hydrogen adsorption. |
| 저자 |
김민수, 전재범, 장지영
|
| 소속 |
서울대 |
| 키워드 |
mesoporous silica; ATRP; hydrogen adsorption
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| E-Mail |
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