LARGELY IMPROVED TENSILE PROPERTIES OF POLY(ETHYLENE TEREPHTHALATE) BY USING GLYCERIN  

作　　者：张琴 

机构地区：[1]Department of Polymer Science and Materials,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,China

出　　处：《Chinese Journal of Polymer Science》2007年第3期319-324,共6页高分子科学（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China financially (Nos. 20404008, 50533050,50373030 and 20490220).

摘　　要：In order to improve the tensile properties of poly（ethylene terephthalate）（PET）, we used the direct esterification method to synthesize PET in a home-made facility, and a certain amount of ethylene glycol （EG）, one of the two starting monomers, was substituted by glycerin （GE）. Four PETs with different GE contents were prepared to investigate the effect of GE on the crystallization and tensile properties of the prepared copolyester. The results showed largely improved tensile properties and increased crystallization temperature due to the possible crosslinking structure in PET by using a small amount of GE.In order to improve the tensile properties of poly（ethylene terephthalate）（PET）, we used the direct esterification method to synthesize PET in a home-made facility, and a certain amount of ethylene glycol （EG）, one of the two starting monomers, was substituted by glycerin （GE）. Four PETs with different GE contents were prepared to investigate the effect of GE on the crystallization and tensile properties of the prepared copolyester. The results showed largely improved tensile properties and increased crystallization temperature due to the possible crosslinking structure in PET by using a small amount of GE.

关 键 词：Poly（ethylene terephthalate） Tensile strength GLYCERIN 

分 类 号：TQ317[化学工程—高聚物工业]