## The preparation of multiblock copolymers poly[poly(~-lactide)-block-polydimethylsiloxane] by polycondensation of bifunctional oligomers via hydrosilylation is described. The procedure consists first to synthesize the two bifunctional oligomers a,wdisilyl-polydimethylsiloxane and a,wdiallyl-poly
Synthesis, characterization and degradation of poly(dl-lactide)-block-polyvinylpyrrolidone-block-poly(dl-lactide) copolymers
✍ Scribed by Lei Xiong; Hong Wei Jiang; Di Zhen Wang
- Publisher
- Springer
- Year
- 2008
- Tongue
- English
- Weight
- 190 KB
- Volume
- 16
- Category
- Article
- ISSN
- 1022-9760
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In this study, poly(DL-lactide)/poly(ethylene glycol) (PDLLA/PEG) copolymers were synthesized. First, PDLLA homopolymers with three different molecular weights (Mw,: 7,300, 12,100 and 21,900) were synthesized by the ring opening polymerization of the dimer (i.e., DL-lactide) by using stannous chlori
## Abstract Biodegradable copolymers were prepared by ring‐opening polymerization of sequentially added __ε__‐caprolactone and DL‐lactide in the presence of ethylene glycol or poly(ethylene glycol), using zinc metal as catalyst. Polymerization was performed in bulk and yielded block copolymers with