| 학회 |
한국고분자학회 |
| 학술대회 |
2006년 봄 (04/06 ~ 04/07, 일산킨텍스) |
| 권호 |
31권 1호 |
| 발표분야 |
고분자 합성 |
| 제목 |
The Effects of Vinylurethane Macromonomers with Structural Difference and Various Molecular Weights as a Reactive Stabilizer In Dispersion Polymerization of styrene |
| 초록 |
The different structure macromonomers have been synthesized to study effect of the macromonomer as stabilizer in dispersion polymerization of the PS microspheres via ethanol medium. Bifunctional cross-type vinyl urethane macromonomers (C-VUM) and linear-type vinyl urethane macromonomers (L-VUM) constitute polyethylene glycol (PEG) having various molecular weights. The structure and molecular weight of synthesized macromonomers were confirmed using 1H NMR and GPC. The average size of the C-VUM-g-PS (C-PS) microspheres decreased from 4.4 to 1.16 ㎛and molecular weight increased from 34,129 to 100,487 g/mol with PEG molecular weight. The C-PS molecular weights were characterized higher than L-PS but the PS particle size was adverse appearance. The XPS result shows that the C-PS miocrospheres were anchored on the surface large amount than the L-PS. The Tg of the grafted polystyrene was negligible change around 100 oC, the onset point of the C-PS were higher than L-PS. |
| 저자 |
정혜전, 송기종, 이강석, 최순자
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| 소속 |
인하대 |
| 키워드 |
macromonomer; polystyrene; dispersion polymerization; reactive stabilizer
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| E-Mail |
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