| 학회 |
한국고분자학회 |
| 학술대회 |
2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 |
30권 2호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Preparation and Characterization of Monodisperse Poly(vinyl Acetate)/Poly(vinyl Alcohol) Microspheres by Heterogeneous Surface Hydrolysis using HCl as a Catalyst |
| 초록 |
Monodisperse poly(vinyl acetate) (PVAc) microspheres through a low temperature suspension polymerization were acid-hydrolised in the heterogeneous system and converted to poly(vinyl acetate-co-vinyl alcohol) (P(VAc-co-VA)) microspheres with various degrees of saponification (DS). Separated P(VAc-co-VA) microspheres by freeze-drying method kept their original spherical shapes, of which micro pores were observed by scanning electron microscope (SEM). We obtaind various structures by controlling of saponification time. From these results, it was concluded that acid-hydrolysis of PVAc microspheres resulted in P(VAc-co-VA) microspheres of which DS increased gradually from inner region to outer. |
| 저자 |
조수혁, 이세근, 한성수, 류원석
|
| 소속 |
영남대 |
| 키워드 |
poly(vinyl alcohol); suspension polymerization; acid-hydrolysis
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| E-Mail |
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