Poly( 1-caprolactone) -poly(ethylene glycol) -poly( 1-caprolactone) triblock copolymers (PECL) covering a wide range of poly(ethylene glycol) (PEG) lengths were synthesized with alkali metal alkoxide derivatives of poly(ethylene glycol). The effects of various factors, such as amount of the initiato
Synthesis and characterization of dendritic star-shaped poly(ϵ-caprolactone)-block-poly(L-lactide) block copolymers
✍ Scribed by Weian Zhang; Sixun Zheng; Qipeng Guo
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 145 KB
- Volume
- 106
- Category
- Article
- ISSN
- 0021-8995
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## SYNOPSIS Blends of poly(L-lactide) (PLLA) and poly(e-caprolactone) (PCL) were prepared in a corotating twin screw miniextruder (40 rpm, 200"). It was attempted to prepare multiblock copolymers by allowing a controlled number of transesterification reactions. Various catalysts (n-Bu,SnOMe, Sn(Oc
Poly(D,L-lactide) -poly(1-caprolactone) -poly(ethylene glycol) -poly(1-caprolactone) -poly (D,L-lactide) block copolymer (PLA-PCL-PEG-PCL-PLA) was prepared by copolymerization of 1-caprolactone (1-CL) and D,L-lactide (D,L-LA) initiated by potassium poly(ethylene glycol)ate in THF at 25ЊC. The copoly