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Synthesis and characterization of novel ABA triblock copolymers from L ‐lactide, glycolide, and PEG
Author(s) -
MohammadiRovshandeh J.,
Farnia S. M. F.,
Sarbolouki M. N.
Publication year - 1999
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19991121)74:8<2004::aid-app15>3.0.co;2-3
Subject(s) - copolymer , materials science , polymer chemistry , polymer , ethylene glycol , amorphous solid , lactide , peg ratio , proton nmr , polyester , chemical engineering , polymer science , chemistry , composite material , organic chemistry , finance , economics , engineering
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). © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 2004–2009, 1999