| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터) |
| 권호 |
38권 1호 |
| 발표분야 |
대학원생 구두발표(발표10분) |
| 제목 |
Microfluidic Generation of Ethyl Cellulose Microcapsules with Optothermally Switched Hydrogel Gates |
| 초록 |
Targeted release of materials encapsulated in solid microcapsules is important in drug delivery systems. Triggered release by near-Infrared light is attractive as light can stimulate small sites of interest and tissues have low absorption in the near IR region. Here, we demonstrated the production of optothermally switched microcapsules using a simple fluidic device. We produced the ethyl cellulose microcapsules loaded with thermoreversible poly(N-isopropylacrylamide) (PNIPAm) particles containing gold nanorods. By adjusting the flow rates of continuous and dispersed phases, we have achieved a precious control over the wall thickness and the overall diameter of capsules. The incorporation of gold nanorods into hydrogels resulted in the rapid volume shrinkage for remote controlled actuation. Irradiation by 808nm laser induced phase transitions and volume changes in PNIPAm gels, increasing the permeability of the capsule shell. |
| 저자 |
정웅찬, 양승만
|
| 소속 |
한국과학기술원 |
| 키워드 |
microfluidics; microcapsule; controlled release; double emulsion
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| E-Mail |
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