| 학회 |
한국화학공학회 |
| 학술대회 |
2004년 봄 (04/23 ~ 04/24, 공주대학교) |
| 권호 |
10권 1호, p.322 |
| 발표분야 |
분리기술 |
| 제목 |
Crystallizaion of L-PLA using the continuous supercritical antisolvent precipitation process |
| 초록 |
The continuous supercritical antisolvent precipitation(SAS) process was used to produce the submicron particles of the poly(L-lactic acid)(L-PLA). In this technique, the solute of interest is dissolved into solvent and submicron particles were formed by spraying this solution continuously through a nozzle into precipitation chamber containing the supercritical antisolvent. In this study, methylene chloride(CH2Cl2) was selected as a solvent for L-PLA and carbon dioxide was used as an antisolvent. The object of this study was to investigate the effects of the various process parameters such as temperature, pressure, concentration and flow rate of liquid solution on particle size and morphology of L-PLA. The SEM(scanning electron microscope) was used to observe the morphology, size, and size distribution of recrystallized particles. The mean size of processed particles was also measured by using a laser diffraction particle size analyzer.
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| 저자 |
김미영1, 이윤우2, 김재덕1, 이창하3, 임종성1
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| 소속 |
1한국과학기술(연), 2서울대, 3연세대 |
| 키워드 |
crystallization; SAS; L-PLA; SEM
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| E-Mail |
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| 원문파일 |
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