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Eco-friendly Waterborne Alkyd Resin from Polyethylene Terephthalate Waste
Journal of Polymers and the Environment ( IF 5.3 ) Pub Date : 2020-02-03 , DOI: 10.1007/s10924-020-01666-2
Yangmin Ma , Rui Lei , Xiufang Yang , Fangzhou Yang

Abstract

This work reports a simple and ecofriendly way of recycling polyethylene terephthalate (PET) waste. PET waste was glycolyzed using trimethylolpropane (TMP) giving tetra-functional glycolyzate, to prepare alkyd resin. 0.25% ZnOAc and the TMP to PET molar ratio of 12:1 at 220 °C produced the best yield of glycolyzate. The obtained glycolyzate was characterized by Fourier transform infrared spectroscopy (FTIR) spectroscopy, 1H and 13C nuclear magnetic resonance (NMR) and further used in the synthesis of alkyd resins. The properties of the prepared alkyd resins including acid value, the pencil hardness, chemical resistance and thermal stability, were investigated. The pencil hardness of the cured resins film is 3H, which is better than the commercial alkyd resin YF-155. Thermogravimetric analysis (TGA) exhibited polymer decomposition occurred above 160 °C. When compared to commercial coatings, Zanthoxylum bungeanum seed oil (ZSO)-based alkyd resin from postconsumer PET bottles has potential for commercial applications, and may even be superior in thermal and chemical resistance.



中文翻译:

聚对苯二甲酸乙二醇酯废料的环保型水性醇酸树脂

摘要

这项工作报告了一种简单而环保的回收聚对苯二甲酸乙二醇酯(PET)废物的方法。使用三羟甲基丙烷(TMP)对PET废料进行乙醛化,得到四官能的乙二醛酸酯,以制备醇酸树脂。0.25%ZnOAc和220°C下TMP与PET的摩尔比为12:1产生了最佳的乙醇酸乙酯产量。通过傅立叶变换红外光谱(FTIR)光谱,1 H和13表征获得的乙醇酸C核磁共振(NMR),并进一步用于醇酸树脂的合成。研究了制备的醇酸树脂的性能,包括酸值,铅笔硬度,耐化学性和热稳定性。固化树脂膜的铅笔硬度为3H,优于市售的醇酸树脂YF-155。热重分析(TGA)显示,聚合物在160°C以上分解。与商用涂料相比,来自消费后PET瓶的花椒种子油(ZSO)基醇酸树脂具有商业应用潜力,甚至在耐热性和耐化学性方面也很出色。

更新日期:2020-02-03
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