Depolyrnerization of poly(ethylene terephthalate) wastes using 1,4-butanediol and triethylene glycol

被引：83

作者：

Mansour, SH ^{[1
]}

Ikladious, NE ^{[1
]}

机构：

[1] Natl Res Ctr, Dept Polymers & Pigments, Giza, Egypt

来源：

POLYMER TESTING | 2002年 / 21卷 / 05期

关键词：

1,4-butanediol; depolymerization; glycolysis; (PET) wastes; triethylene glycol;

D O I：

10.1016/S0142-9418(01)00115-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Polyethylene terephthalate (PET) wastes were depolymerized using 1,4-butanediol (BD) and triethylene glycol (TEG) in the presence of zinc acetate as a transesterification catalyst. The glycolyzed products were analyzed for hydroxyl and acid values and identified by elemental analysis, GPC, (HNMR)-H-1, (CNMR)-C-13, differential scanning calorimeter (DSC) and mass spectra techniques. It was found that the glycolyzed products consist mainly of bis- (hydroxybutyl terephthalate) monomer and dimer by using 1,4-butanediol. The depolymerization using TEG resulted in products of TEG-(TPA-TEG)(n) for n=1-3. All glycolyzed products had low acid value indicating the presence of a minor fraction of terephthalate oligoesters. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：497 / 505

页数：9

共 22 条

[1] Recycled flexible resins in concrete [J].