WANG Shen-guo, QIU Bo. THE SYNTHESIS AND CHARACTERIZATION OF BIODEGRADABLE POLYCAPROLACTONE (PCL)-BLOCK- POLYCETHYLENE GLYCOL) (PEG) COPOLYMER[J]. Acta Polymerica Sinica, 1993,(5):620-623.
WANG Shen-guo, QIU Bo. THE SYNTHESIS AND CHARACTERIZATION OF BIODEGRADABLE POLYCAPROLACTONE (PCL)-BLOCK- POLYCETHYLENE GLYCOL) (PEG) COPOLYMER[J]. Acta Polymerica Sinica, 1993,(5):620-623.DOI:
A new biodegradable Poly (e-caprolactone)-Poly (ethylene glycol) block copolymer (PCL-b-PEG) has been synthesized by co-polycondensation reaction of e-caprolactone (e-CL) and poly (ethylene glycol) (PEG) in the presence of Ti(OBu)4 catalyst. The composition
hy-drophilicity and crystallinity of the copolymer can be controlled by changing the feeding dose of reaction system. The degradation rate of the PCL-b-PEG copolymer is improved by introducing the PEG segment