| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Preparation of mono-dispersed poly(vinylamine)/silica hollow particles and their release behaviors |
| 초록 |
Poly(vinyl amine)(PVAm)/silica hollow composite particles were prepared by dispersion polymerization and sol-gel process to encapsulate water-soluble materials. The uniform mciro-sized PVAm hollow particles as a substrate were synthesized from the poly(N-vinylfrmamide) particles by hydrolysis on the basic condition. Then silica was coated on the surface of the PVAm hollow particles by sol-gel process. The shape and morphology of PVAm/silica hollow composite particle were investigated by the OM, SEM and TEM. Amine contents and porosity of PVAm/silica hollow composite particles were examined by ninhydrin assey and Brunauer-Emmett-Teller (BET) isotherm of sorption/desorption of nitrogen, respectively. X-ray photoelectron spectroscopy (XPS) was used to characterize the surface property of the PVAm/silica hollow composite particles. Loading efficiency and release behavior of water-soluble material were measured by utilizing UV-vis. |
| 저자 |
구보미, 한주현, 서경도
|
| 소속 |
한양대 |
| 키워드 |
water-soluble materials; encapsulation; sol-gel process
|
| E-Mail |
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