| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 봄 (04/12 ~ 04/13, 제주 ICC) |
| 권호 |
32권 1호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Controlled synthesis of polystyrene and polybutadiene brushes on nanoparticulate silica by living anionic surface-initiated polymerization |
| 초록 |
Living anionic surface-initiated polymerization on silica surface has been conducted to prepare polystyrene and polybutadiene brushes. Fucntionalized silica using vinylbenzylchlorodimethylsilane(VBS) which was synthesized from vinylbenzylmagnesium chlorides and dichlorodimethylsilane was initiated by sec-BuLi. Polystyrene and polybutadiene brushes could be synthesized by adding styrene and butadiene monomer to surface-initiated silica. The molecular weight of the polymer brushes has been varied between 1000 and 15,000g/mol. When total polymerization yield was 90%, grafting efficiency is 13~44% and when initiation time increased in 1 hour to 2hours, grafting efficiency increased in 25 to 34% and graft density increased in 3.14 to 4.35×108chains/μm2. Characterization of products was done with proton nuclear magnetic resonance(1H-NMR) spectroscopy, gel permeation chromatography(GPC) and scanning electron microscope(SEM) . |
| 저자 |
강철한, 이범재, 이정환, 유호준, 김나리, 김두환, 신범식, 이종섭
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| 소속 |
충남대 |
| 키워드 |
Living anionic surface initiated polymerization; Silica; Polymer brushes; Vinylbenzylchlorodimethylsilane
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| E-Mail |
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