## Abstract Poly(Lβlactide)βpoly(ethylene glycol) multiblock copolymers with predetermined block lengths were synthesized by polycondensation of PLA diols and PEG diacids. The reaction was carried out under mild conditions, using dicyclohexylcarbodiimide as the coupling agent and dimethylaminopyrid
Thermogelling Aqueous Solutions of Alternating Multiblock Copolymers of Poly( l -lactic acid) and Poly(ethylene glycol)
β Scribed by Lee, Jisun; Bae, You Han; Sohn, Youn Soo; Jeong, Byeongmoon
- Book ID
- 120927449
- Publisher
- American Chemical Society
- Year
- 2006
- Tongue
- English
- Weight
- 362 KB
- Volume
- 7
- Category
- Article
- ISSN
- 1525-7797
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This article investigated the effects of electron beam (EB) irradiation on poly(D,L-lactic acid)-b-poly-(ethylene glycol) copolymer (PLEG) and poly(L-lactic acid) (PLLA). The dominant effect of EB irradiation on both PLEG and PLLA was chain scission. With increasing dose, recombination reactions or
## Abstract Novel thermoreversible gelation behavior of aqueous solutions of ABAβtype triblock copolymers composed of the central polyethylene oxide (PEG) block and two poly(D,Lβlactic acidβ__co__βglycolic acid) side blocks was found. Phase transition characteristics, such as critical gel concentra