| 학회 |
한국공업화학회 |
| 학술대회 |
2009년 봄 (04/15 ~ 04/17, 호텔인터불고(대구)) |
| 권호 |
13권 1호 |
| 발표분야 |
고분자 |
| 제목 |
Release property of ethylcellulose microcapsules containing NIPAM copolymer |
| 초록 |
Microcapsules composed of poly (N-isopropylacrylamide-co-methacrylic acid)(P(NIPAM-co-MAA)) cores and ethyl cellulose matrix were prepared by an emulsification and spray-drying method. In order to prepare water-in-oil emulsions, P(NIPAM-co-MAA) aqueous solution was micronized in ethylcellulose solution in dichloromethane. The emulsion was spray-dried around 50℃. Above LCST, the release was suppressed. NIPAM copolymers acts as a thermal trap for blue dextran when temperature is above LCST. In addition, the microcapsules showed pH-sensitive release. This is possibly because the LCST of the copolymer strongly depends on the pH of medium. |
| 저자 |
강미경, 홍연지, 권택관, YANG XIA, 김진철
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| 소속 |
강원대 |
| 키워드 |
N-isopropylacrylamide; methacrylic acid; spray drying; temperature-/pH-dependent release
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| E-Mail |
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