| 초록 |
The preparation of silica shell on polystyrene (PS) and poly(styrene-co-4-vinylpyridine) (PS-co-4VP) microspheres is explored. The PS and (PS-co-4VP) microspheres were synthesized via conventional dispersion polymerization using polyvinylpyrrolidone as the stabilizer and precipitation without any stabilizer, respectively. Due to the basic characteristics of P4VP, the silica shell is readily formed on the (PS-co-4VP) microspheres. The thicker silica shell was formed with the increased content of P4VP. By adjusting the amount of TEOS and ammonia solution, it was possible to control the thickness of silica shell. The morphology change of the hybrid particles with respect to the reaction conditions was thoroughly investigated. |
