화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2002년 봄 (04/12 ~ 04/13, 서울대학교)
권호 27권 1호, p.130
발표분야 고분자 구조 및 물성
제목 Thermodynamic property of poly(lactic acid)/dialkyl phthalate system
초록 Biodegradable, biocompatible poly(lactic acid) is a versatile material in tissue engineering and drug delivery system. This work was focused on the thermodynamic property of poly(lactic acid)/dialkyl phthalate system. Theta temperature and interaction parameter are important thermodynamic parameters of polymer solution, which represent the extent of the interaction between polymer and solvent. In order to investigate the effect of stereoregularity of the polymer on the interaction parameter two different enantiomeric polymers, poly(l-lactic acid) and poly(dl-lactic acid), were used. A series of dialkyl phthalates, with different number of carbon atoms in the alkyl chain, was adopted to control the solvent quality. Theta temperature was estimated from the critical solution temperatures of different molecular weight polymers via optical microscopy with temperature control. The interaction parameter was determined by Zimm plots of static light scattering.
저자 이재성1, 이환광*2, 김성철3
소속 1한국과학기술원, 2기능성고분자신소재연구센터, 3*청운대
키워드
E-Mail kimsc@mail.kaist.ac.kr