Abstract
In order to investigate the effects of low molecular weight organic additives containing phenol hydroxyl group on the crystallization,melting and mechanical properties of biodegradable aliphatic polyester,poly(butylene succinate)(PBS) and bisphenol A(BAP) were selected to blend via solution mixing method.Then 13C-NMR spectroscopy was used to probe the interaction between PBS and BPA,and the effects of BPA on the crystallization,melting,glassy transition temperature(Tg) and dynamic mechanical properties were investigated using DSC(differential scanning calorimetry) and DMTA(dynamic mechanical thermal nalysis).The results indicate that hydrogen-bonding was formed between phenol hydroxyls in BPA and ester groups in PBS chain,leading to the decrease of crystallization ability and melting point for PBS,which is attributed to the formation of PBS-BPA complexes via intermolecular hydrogen-bonding that disrupts the regularity of the PBS chain structure.The storage modulus of PBS-BPA complexes decreases with the increase of BPA content above the glassy transition temperature due the decreasing of crystallization ability for PBS,while the maximun position of the loss factor shifts to high temperature.
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