| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 봄 (04/10 ~ 04/11, 컨벤션 뷰로(대전)) |
| 권호 |
33권 1호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Comparison of Micelles Formed by Amphiphilic Star Block Copolymers Prepared in the Presence of HCl · Et2O as a monomer activator. |
| 초록 |
Purpose. In this article, we describe the synthesis of PEG-b-polyester star block copolymers via ring opening polymerization (ROP) of ester monomers initiated at the hydroxyl end group of the core PEG using HCl•Et2O as a monomer activator. Results. Copolymers with a higher arm number had a higher tendency toward crystallization. The crystallinity of the PEG-b-polyester star block copolymers also depended on the nature of the polyester block. The CMCs of the PEG-b-PCL star block copolymers, determined from fluorescence measurements, increased with increasing arm number. Conclusions. A key aspect of the present work is that we successfully prepared PEG-b-polyester star block copolymers by a metal-free method. Thus, unlike copolymers synthesized by ROP using a metal as the monomer activator, our copolymers do not contain traces of metals and hence are more suitable for biomedical applications. |
| 저자 |
오재민1, 김병수1, 조재송1, 윤주용1, 김문석1, 강길선2, 이해방1
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| 소속 |
1한국화학(연), 2전북대 |
| 키워드 |
Poly(ethylene glycol); polyester; star block copolymer; ring-opening polymerization;
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| E-Mail |
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