Depolymerisation of poly(ethylene terephthalate) fibre wastes using ethylene glycol

被引：230
作者：
Ghaemy, M [1 ]
Mossaddegh, K [1 ]
机构：
[1] Univ Mazandaran, Fac Sci, Dept Chem, Babol Sar, Iran
来源：
POLYMER DEGRADATION AND STABILITY | 2005年 / 90卷 / 03期
关键词：
PET; depolymerisation; glycolysis; recycling of PET fibre wastes;
D O I：
10.1016/j.polymdegradstab.2005.03.011
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Poly(ethylene terephthalate) [PET] fibre wastes from an industrial manufacturer was depolymerised using excess ethylene glycol [EG] in the presence of metal acetate as a transesterification catalyst. The glycolysis reactions were carried out at the boiling point of ethylene glycol under nitrogen atmosphere up to 10 h. Influences of the reaction time, volume of EG, catalysts and their concentrations on the yield of the glycolysis products were investigated. The glycolysis products were analysed for hydroxyl and acid values and identified by different techniques, such as HPLC, H-1 NMR and C-13 NMR, mass spectra, and DSC. It was found that the glycolysis products consist mainly of bis(hydroxyethyl)terephthalate [BHET] monomer (>75%) which was effectively separated from dimer in quite pure crystalline form. (c) 2005 Elsevier Ltd. All rights reserved.
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页码：570 / 576
页数：7
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