DEPOLYMERIZATION OF POLY(ETHYLENE-TEREPHTHALATE) RESIN UNDER PRESSURE

被引：108

作者：

CHEN, JY ^{[1
]}

OU, CF ^{[1
]}

HU, YC ^{[1
]}

LIN, CC ^{[1
]}

机构：

[1] NATL CHIAO TUNG UNIV,INST APPL CHEM,HSINCHU,TAIWAN

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1991年 / 42卷 / 06期

关键词：

D O I：

10.1002/app.1991.070420603

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The process of depolymerization of PET resin by EG glycolysis under pressure is investigated. The kinetics of this pressurized depolymerization of PET resin is discussed. It was found that the rate of deploymerization is dependent of temperature, pressure, and concentration ratio of EG to PET. The rate of depolymerization is proportional to the square of EG concentration and faster than that under atmospheric pressure. Glycolyzed products under pressure consist of the PET monomer, BHET, and oligomers, mostly dimer and trimer. An equilibrium between BHET and oligomers is attained quickly soon after the deploymerization step is completed in the case of a higher ratio of EG/PET used. In the case of lower ratio of EG/PET, the final product now consists of molecular weight of oligomers rather than monomer, dimer, and trimer.

引用

页码：1501 / 1507

页数：7

共 9 条

[1] DEPOLYMERIZATION OF POLY(ETHYLENE-TEREPHTHALATE) RECYCLED FROM POST-CONSUMER SOFT-DRINK BOTTLES [J].