The kinetics of diethylene glycol formation in the preparation of polyethylene terephthalate

被引：0
|
作者：
Chen, JW [1 ]
Chen, LW [1 ]
机构：
[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 10764, Taiwan
来源：
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1998年 / 36卷 / 17期
关键词：
direct esterification; BHET; EG; DEG; OH reactivity; kinetics;
D O I：
10.1002/(SICI)1099-0518(199812)36:17<3073::AID-POLA8>3.0.CO;2-X
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
For revealing diethylene glycol (DEG) formation in poly(ethylene terephthalate) (PET) synthesis, this research focused on finding the stage most critical for DEG formation. It is found that the esterification stage was the most critical stage for DEG formation during production of PET through the direct esterification process. In addition, the kinetics of the formation of DEG (ether bond), which is mainly produced from hydroxyl end groups of ethylene glycol (EG) and bis-hydroxyethyl terephthalate (BHET) oligomer, was investigated. The results show that the reactivity of BHET-OH functional group is greater than that of EG-OH functional group in the reaction to produce ether bonds. (C) 1998 John Wiley & Sons, Inc.
引用
收藏
页码：3073 / 3080
页数：8
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