Structure and thermal properties of various alcoholysis products from waste poly(ethylene terephthalate)
Structure and thermal properties of various alcoholysis products from waste poly(ethylene terephthalate)
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DOI：
10.1016/j.wasman.2018.12.032
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发表时间：
2019
期刊：
影响因子：
8.1
通讯作者：
Lei Wanqing
中科院分区：
文献类型：
--
作者：
Zhou Xing;Wang Chenxi;Fang Changqing;Yu Ruien;Li Yaguang;Lei Wanqing
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, 1H-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.
