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In this study, the hydrolytic and thermal oxidative degradation behavior of thermotropic aromatic–aliphatic copolyesters based on 4-hydroxybenzoic acid (HBA), 4-hydroxy-3-methoxybenzoic acid (VA), poly(butylene terephthalate) (PBT) and lactic acid (LA) have been investigated. The hydrophilicity and alkaline hydrolytic degradation rate of copolyesters increased with increasing LA contents. FTIR, DSC...
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