| 학회 | 한국고분자학회 |
| 학술대회 | 2002년 봄 (04/12 ~ 04/13, 서울대학교) |
| 권호 | 27권 1호, p.297 |
| 발표분야 | 의료용 고분자 부문위원회 |
| 제목 | Preparation and Characterization of the novel diblock copolymer based on Poly(ethylene glycol) and Poly(L-lactide-co-ε-Caprolactone) random copolymer for Drug Delivery Systems |
| 초록 | DDS(drug delivery systems) based on polyester have been much investigated due to their biodegradability, biodegradability and nontoxicity. But there are still many problems to be resolved such as cell deformation and denaturation of the loading materials. It is known that the incorporation of PEG chain to copolymer brings the enhancement of hydrophilicity and prevents protein and peptide adsorption. The crystallinity of the matrix polymer influencing the cell deformation is usually dependent on the structure of the matrix polymer. In this study, we prepared novel diblock copolymers based on the MPEG and random copolymers of L-lactide and ε-caprolactone and characterized their structures and properties by DSC, GPC, 1H NMR, 13C NMR, and FT-IR analysis. The degree of hydrophilicity of the diblock copolymers was determined by the water uptake test and water contact angle measurement. Diblock copolymers that consist of both part randomized with LLA and εCL segments and PEG units showed lower crystallinity and higher hydrophilicity than the conventional block copolymers based on the LLA and εCL. MPEG-b-P(LLA-ran-εCL) copolymer containing equal amount of LLA and εCL units was found to be most effective in the reduction of crystallinity and in the enhancement of hydrophilicity. |
| 저자 | 민연진, 조국영, 성시준, 이성남, 박정기 |
| 소속 | 한국과학기술원 생명화학공학과 |
| 키워드 | |
