Star-Shaped Poly (Γ-Caprolactone-b-Ethylene Glycol): Synthesis, Characterization and Aggregation Behavior


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Linear and Star-shaped PCL-b-PEG copolymers were synthesized through a two step process, including the first step to synthesize the star-shaped PCL through ring-opening polymerization of Γ-caprolactone initiated from multi-functional alcohol under the existence of tin(II) ethylhexanoate [Sn(Oct)2] catalyst, and the following step to couple the obtained star-shaped PCL with PEG segments using bi-functional linker. The structure of the polymers was confirmed by IR, NMR, GPC, et al. The aggregation behaviors of the star-shape copolymers were compared with that of the linear block copolymer with corresponding molecular weight of each arm, and the influences of structure factors were discussed.



Key Engineering Materials (Volumes 342-343)

Edited by:

Young-Ha Kim, Chong-Su Cho, Inn-Kyu Kang, Suk Young Kim and Oh Hyeong Kwon




Y. J. Fan et al., "Star-Shaped Poly (Γ-Caprolactone-b-Ethylene Glycol): Synthesis, Characterization and Aggregation Behavior", Key Engineering Materials, Vols. 342-343, pp. 725-728, 2007

Online since:

July 2007




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