The copolymers were synthesized with L-lactide and glycolide in the different mole ratios by ring-opening method using PEG-800 as initiator.The copolymers were characterized by Infrared Spectroscopy
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H-Nuclear Magnetic Resonance
Gel Permeation Chromatography
Contact Angle Measurement and Thermo gravimetric Analysis.The results showed that the hydrophilic of copolymers were improved when PEG-800 used as initiator
and the co-monomer GA also affect the hydrophilic of copolymers.Water absorption were tested
the results showed that with co-monomer GA increasing
water absorption was enhanced. As far as the same contain initiator PEG-800
the copolymer films with L-lactide and glycolide in the mole ratio of 3:1 had better the property of water absorption.