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Studies on hydrolytic degradation of epoxy-polyester resins cured with glutaric anhydride
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 glycid...
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| Published in: | Polymers for advanced technologies 2002-10, Vol.13 (10-12), p.871-883 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | 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 1H‐NMR. Copyright © 2003 John Wiley & Sons, Ltd. |
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| ISSN: | 1042-7147 1099-1581 |
| DOI: | 10.1002/pat.281 |