CEI环聚体的合成与表征

Synthesis and characterization of cyclic ethylene isophthalate (CEI) ring polymer

本文以间苯二甲酰氯和乙二醇为反应单体,采用"假高稀"法,经过试剂除水、合成、分离和除杂等过程,得到了间苯二甲酸乙二醇环聚体(CEI),并对其进行了液相色谱、凝胶渗透色谱和核磁共振分析表征。结果表明,实验合成的CEI环聚体以二聚体、三聚体和六聚体为主,含有较多的线聚体等杂质,需要进一步优化合成工艺及分离方法。

In this paper,the method of pseudo-high-dilution for CEI ring polymer was synthesized by isophthaloyl dichloride and glycol as the reaction monomers,through the process of reagent water removal,synthesis,separation and impurity removal to obtain high purity product,and the samples were characterized by liquid chromatography,gel permeation chromatography and nuclear magnetic resonance.The results showed that the synthesized CEI ring polymer were mainly dimer,trimer and hexamer,which contained much such as linear impurities,so it was necessary to optimize the synthesis process and separation method.