【摘要】 以芳族聚酯(PET)为硬链段,以脂族聚酯(PCL)为软链段的聚酯一聚酯嵌段共聚物,由于聚合反应过程中同时存在多种酯交换反应,链的化学结构变复杂了.应用核磁共振技术(氢谱和碳谱)和应用几种模型化合物的研究证明,PET—PCL嵌段共聚物软、硬链段间的联接有两种方式,软链段有两种结构形式,而硬链段的结构单元也有两种类型,从而确定了PET—PCL 嵌段共聚物链的化学结构.更多还原

【Abstract】 The chain chemical structure of the copolymer gets complicated,becausethe poly∈-caprolectone takes part in the ester exchange reaction.Proton spectraand C¹³ spectra of samples and model compounds have shown that two types ofthe soft segment structure,two types of the structure unit of the hard segmentand two types of linked form between soft and hard segments exist in the copo-lymer.更多还原