Structure and thermal properties of various alcoholysis products from waste poly(ethylene terephthalate)

被引：69
|
作者：
Zhou, Xing [1 ,2 ]
Wang, Chenxi [1 ]
Fang, Changqing [1 ,2 ]
Yu, Ruien [2 ,3 ]
Li, Yaguang [1 ]
Lei, Wanqing [1 ,2 ]
机构：
[1] Xian Univ Technol, Fac Printing Packaging Engn & Digital Media Techn, Xian 710098, Shaanxi, Peoples R China
[2] Xian Univ Technol, Sch Mech & Precis Instrument Engn, Xian 710048, Shaanxi, Peoples R China
[3] North Univ China, Sch Mech Engn, Taiyuan 030051, Shanxi, Peoples R China
来源：
WASTE MANAGEMENT | 2019年 / 85卷
基金：
中国国家自然科学基金;
关键词：
Alcoholysis; Waste PET; Recycling; Poly(propylene glycol); Thermal stability; PET BOTTLE; GLYCOLYSIS; PLASTICIZER; KINETICS; FIBER;
D O I：
10.1016/j.wasman.2018.12.032
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Waste polyethylene terephthalate (PET) has been a core member in plastic polluters due to the great amount consumption in food packaging, soft-drink bottles, fibers and films. It is essential to recycle waste PET and alcoholysis is a significant way to accomplish chemical recycling. In this work, three kinds of dihydric alcohols, including neopentyl glycol (NPG), dipropylene glycol (DPG) and poly(propylene glycol) (PPG), were employed to decompose waste PET with different temperatures, catalysts, and PET. A series of alcoholysis products with different appearance were obtained. The bulk structure and thermal properties of alcoholysis products were investigated by FTIR, H-1 NMR, MALDI-TOF, DSC and TG experiments. It is found that poly(propylene glycol) may react with waste PET to generate copolymer instead of oligomer products, dimers or trimers, etc. This product possesses excellent shelf stability and present transparent appearance, which may hold a great potential application in chemical industry. Moreover, the alcoholysis activity of DPG is the lowest comparing with NPG and EG in degradation of waste PET. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：164 / 174
页数：11
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