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Synthesis and characterization of novel ABA triblock copolymers from L-lactide, glycolide, and PEG

✍ Scribed by J. Mohammadi-Rovshandeh; S. M. F. Farnia; M. N. Sarbolouki

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 149 KB
Volume: 74
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19991121)74:8<2004::aid-app15>3.0.co;2-3

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✦ Synopsis

A series of novel triblock copolymers, consisting of a poly(ethylene glycol) center block joined by two blocks of random L-lactide/glycolide copolymers, are synthesized and their characteristics (spectral, thermal, and mechanical) determined. Polymer compositions and structures are assessed via 1 H-NMR and 13 C-NMR spectroscopies. DSC and stress-strain behavior studies demonstrate that these copolymers are generally more amorphous, more elastic, and tougher than are poly(L-lactides).

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