基于消费后聚对苯二甲酸乙二酯的不饱和聚酯树脂纳米复合材料

Unsaturated Polyester Resin Nanocomposites Based on Post-Consumer Polyethylene Terephthalate.

作者信息

Kirshanov Kirill, Toms Roman, Melnikov Pavel, Gervald Alexander

机构信息

M.V. Lomonosov Institute of Fine Chemical Technologies, MIREA-Russian Technological University, 119571 Moscow, Russia.

出版信息

Polymers (Basel). 2022 Apr 14;14(8):1602. doi: 10.3390/polym14081602.

DOI:10.3390/polym14081602

PMID:35458352

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9025439/

Abstract

A method for producing nanocomposites of unsaturated polyester resins (UPR) based on recycled polyethylene terephthalate (PET) as a matrix has been proposed. The upcycling method involves three successive stages: (1) oligoesters synthesis, (2) simultaneous glycolysis and interchain exchange of oligoesters with PET, (3) interaction of the obtained resins with glycol and maleic anhydride. UPRs were characterized by FTIR spectroscopy and gel permeation chromatography. The mechanical properties of nanocomposites obtained on the basis of these resins and titanium dioxide have been investigated. It has been shown that 1,2-propylene glycol units, despite their lower reactivity, significantly improve the properties of UPR. The most promising nanocomposite sample exhibited tensile strength 112.62 MPa, elongation at break 157.94%, and Young's modulus 29.95 MPa. These results indicate that the proposed method made it possible to obtain nanocomposites with high mechanical properties based on recycled PET thus allowing one to create a valuable product from waste.

摘要

提出了一种以回收聚对苯二甲酸乙二酯（PET）为基体生产不饱和聚酯树脂（UPR）纳米复合材料的方法。这种升级再造方法包括三个连续阶段：（1）低聚酯合成，（2）低聚酯与PET的同时二醇解和链间交换，（3）所得树脂与二醇和马来酸酐的相互作用。通过傅里叶变换红外光谱（FTIR）和凝胶渗透色谱法对UPR进行了表征。研究了基于这些树脂和二氧化钛制备的纳米复合材料的力学性能。结果表明，1,2 - 丙二醇单元尽管反应活性较低，但能显著改善UPR的性能。最有前景的纳米复合材料样品的拉伸强度为112.62 MPa，断裂伸长率为157.94%，杨氏模量为29.95 MPa。这些结果表明，所提出的方法能够基于回收PET获得具有高力学性能的纳米复合材料，从而能够从废物中制造出有价值的产品。