聚酯聚醚嵌断共聚酯的合成及性能研究

Study on Synthesis and Properties of Polyether Polyester Block Copolymer

以对苯二甲酸为主要原料,合成了一系列配比的聚酯聚醚嵌断共聚酯(PTMG-PET),用示差扫描量热(DSC)方法和光学解偏振方法分别研究了该体系的热性能和等温结晶动力学。结果表明,共聚物组成和结晶温度均会影响材料的结晶行为,这将有利于控制和改善PET的加工性。

In this paper,a series of copolyesters modified by poly(tetramethy lene glycol)were synthesized.The isothermal crystallization and thermal properti es of these samples were investigated by means of optica depolarizing intension technology and DSC.The results show that both the composition and crystallizatio n temperature take effect on crystallization behaviors,which might be helpful fo r controlling and improving the material processing properties.