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Synthesis, characterization, and biodegradation of maleic anhydride, ethylene glycol‐copolymerization modified poly( D,L ‐lactide acid) and their crosslinked products
Author(s) -
Huang Meina,
Wang Yuanliang,
Luo Yanfeng
Publication year - 2010
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/app.32692
Subject(s) - polymer chemistry , maleic anhydride , ethylene glycol , oligomer , copolymer , materials science , maleic acid , lactide , chemistry , organic chemistry , polymer , composite material
Abstract Novel maleic anhydride (MAH), ethylene glycol oligomer‐modified poly( D,L ‐lactide acid) (PEMLA), and crosslinked‐PEMLA were synthesized via a series of chemical bulk modification. Briefly, MAH copolymerized with ethylene oligomer [EGO (including EG, PEG200, PEG400)] to give the PEMA; thereafter, D,L ‐lactide (DLLA) and prepolymers (PEMA) copolymerized to produce the PEMLA; at last, the crosslinked‐PEMLA was synthesized by free radical reaction of the PEMLA. The characterization of PEMLA and crosslinked‐PEMLA showed that the introduction of hydrophilic group O and CHCH increased the flexibility and hydrophilicity of PDLLA. Moreover, the degradation of PEMLA and crosslinked‐PEMLA were determined by molar weight changes and weight loss rate, and a special method, analysis of degradation positions via 1 H‐NMR, which indicated that the PEMLA and crosslinked‐PEMLA have nice degradation, and the change of content of MAH, EGO can regulate the degradation rate of PDLLA. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010