Thermally induced phase separation(TIPS) in poly(lactic acid)/dialkyl phthalate system = 폴리락틱산/디알킬프탈레이트 계에서의 열유도 상분리

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Poly(lactic acid) is widely known as the biodegradable and biocompatible material. It is used to the tissue engineering and drug delivery system as porous scaffolds. Thermally induced phase separation (TIPS) is a simple and ideal method for the fabrication of scaffolds. Nevertheless the difficulty in the morphology control is limited its application. In this study, TIPS in poly(lactic acid)/dialkyl phthalate system was investigated. A series of dialkyl phthalates, with different number of carbon atoms in the alkyl chain, was used to control the solvent power. The phase diagram was constructed to understand the change of the phase transition temperature with the change of the solvent power. From the numerical calculation the interaction parameter and the theta temperature were estimated. In order to investigate the competitive phase separation between the liquid-liquid phase separation and crystallization, temperature jump experiment was carried out. The factors which could influence the final morphology were examined.
Advisors
Kim, Sung-Chulresearcher김성철researcher
Description
한국과학기술원 : 화학공학과,
Publisher
한국과학기술원
Issue Date
2001
Identifier
165621/325007 / 000993414
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 화학공학과, 2001.2, [ vi, 60 p. ]

Keywords

phase diagram; thermally induced phase separation; poly(lactic acid); morphology; 몰폴로지; 상도; 열유도 상분리; 폴리락틱산

URI
http://hdl.handle.net/10203/29707
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=165621&flag=dissertation
Appears in Collection
CBE-Theses_Master(석사논문)
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