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Author(s): |
Xing-li Shi, Key Laboratory of Eco-Environment-Related Polymer Materials Ministiry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lan Zhou, China
De-dai Lu, Key Laboratory of Eco-Environment-Related Polymer Materials Ministiry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lan Zhou, China
Zi-qiang Lei, Key Laboratory of Eco-Environment-Related Polymer Materials Ministiry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lan Zhou, China |
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Abstract: |
A series of biodegradable multifunctional hyperbranched-linear-hyperbranched barbell-like copolymers(HLHCs) were prepared by poly(ethylene glycol) (PEG), D, L-lactic acid (D, L-LA) and 2,2-Bis(hydroxymethyl)propionic acid(BHP AB2-type monomer) under bulk condition. The branching density of the hyperbranched section were varied by controlling the molar ratio of BHP to hydroxyl-terminal groups of PEG. The copolymers were characterized by 1H-NMR, 13C-NMR, GPC.
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