摘要
研究了含有酚羟基的小分子添加剂双酚A(BPA)对可生物降解高分子材料聚丁二酸丁二酯(PBS)的结晶、熔融及玻璃化转变的影响.研究表明在PBS中添加BPA,使PBS的结晶能力下降、熔点降低,这源于PBS与BPA通过氢键相互作用形成复合物,破坏了PBS的规整结晶结构.动态力学热分析表明,复合物的玻璃化转变温度随着BPA含量增加而升高,动态储能模量下降.
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.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2011年第2期132-138,共7页
Acta Polymerica Sinica
基金
国家自然科学基金(基金号50873112
51063004)资助项目
关键词
聚丁二酸丁二酯
双酚A
复合物
氢键
结晶
Polybutylene succinate
Biphenol A
Complexes
Hydrogen-bonding
Crystallization
