Citation: Qiu Jin Zhang, Wei Pu Zhu, Zhi Quan Shen. Synthesis and characterization of biodegradable amphiphilic PEG-grafted poly (DTC-co-CL)[J]. Chinese Chemical Letters, ;2010, 21(10): 1255-1258. doi: 10.1016/j.cclet.2010.04.032 shu

Synthesis and characterization of biodegradable amphiphilic PEG-grafted poly (DTC-co-CL)

MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China

Received Date: 25 January 2010

Fund Project: The authors are grateful to the financial supports from the National Natural Science Foundation of China (No.20704036),special fund from the Major State Basic Research Project (No.2005CB623802) and the Committee of Science and Technology of Zhejiang Province.

A novel biodegradable copolymer, poly (5, 5-dibromomethyltrimethylene carbonate-co-ε-caprolactone)(poly(DBTC-co-CL)) with pendant bromine groups, was synthesized via ring-opening polymerization(ROP)of ε-caprolactone(CL)and 5, 5-dibromomethyltrimethylene carbonate (DBTC) using stannous octoate (Sn(Oct)₂) as catalyst. Then the pendant bromine groups were completely converted into azide form, which permitted "click" reaction with alkyne-terminated polyethylene (A-PEG) by Huisgen 1, 3-dipolar cycloadditions preparing biodegradable amphiphilic poly (DTC-co-CL)-g-PEG graft copolymer. The graft copolymer was characterized by nuclear magnetic resonance(NMR)and size-exclusion chromatography (SEC).
- Polycarbonate,
- "Click" reaction,
- Graft copolymer,
- Ring-opening polymerization
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