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Studies on hydrolytic degradation of epoxy‐polyester resins cured with glutaric anhydride
Author(s) -
łukaszczyk Jan,
Jaszcz Katarzyna
Publication year - 2002
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.281
Subject(s) - polyester , succinic anhydride , epoxy , hydrolysis , materials science , polymer chemistry , ether , organic chemistry , copolymer , degradation (telecommunications) , chemistry , polymer , telecommunications , computer science
Biodegradable epoxy‐polyester resins were synthesized in two steps: (1) synthesis of the polyesters with allyl pendent groups; (2) epoxidation of allyl groups in the polyesters. Polyesters with allyl pendent groups were synthesized by melt copolymerization of succinic anhydride (SA) and allyl glycidyl ether (AGE) in the presence of benzyltrimethylammonium chloride (BTMAC) as a catalyst. Functionality of some polyesters was reduced by replacing a part of AGE with butyl glycidyl ether (BGE). The epoxidation of the polyesters obtained was carried out using m ‐chloroperbenzoic acid (MCPBA). The multifunctional epoxy‐polyester resins were cured using different amounts of glutaric anhydride (GA) and without use of it. The cured resins were degraded in aqueous buffer of pH = 7.4 at 70 and 37 °C. The hydrolytic degradation was monitored by determination of mass loss. Fracture surfaces of the samples were examined by scanning electron microscopy. Influence of the composition of initial resins and amount of GA used on the hydrolytic degradation was studied. The products of degradation were identified by HPLC and 1 H‐NMR. Copyright © 2003 John Wiley & Sons, Ltd.