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Chemical Recycling of Polyethlylene Terephthalate by Glycolysis Using Deep Eutectic Solvents
Journal of Polymers and the Environment ( IF 5.3 ) Pub Date : 2019-10-14 , DOI: 10.1007/s10924-019-01578-w
Emine Sert , Esra Yılmaz , Ferhan Sami Atalay

In this study, the glycolysis of polyethylene terephthalate was studied in presence of deep eutectic solvents as catalyst. In the glycolysis of PET, five different deep eutectic solvents were synthesized using different hydrogen bond donors and acceptors. Among the synthesized DESs, the most efficient catalyst was found to be DES formed by potassium carbonate and ethylene glycol. Glycolysis reaction was performed between PET and ethylene glycol. The effects of process parameters such as temperature, ratio of EG/PET and ratio of DES/PET were examined. The maximum yield for monomer product, bis(2-hydroxyethyl) terephthalate was observed as 88% at the reaction temperature of 180 °C, ethylene glycol/deep eutectic solvent ratio of 15 and deep eutectic solvent/polyethylene terephthalate ratio of 6.

中文翻译:

使用深共晶溶剂通过糖酵解对对苯二甲酸乙二酯进行化学回收

在这项研究中,研究了在存在低共熔溶剂作为催化剂的情况下对苯二甲酸乙二醇酯的糖酵解作用。在PET的糖酵解中,使用不同的氢键供体和受体合成了五种不同的深共熔溶剂。在合成的DES中,发现最有效的催化剂是由碳酸钾和乙二醇形成的DES。在PET和乙二醇之间进行糖酵解反应。考察了温度,EG / PET比和DES / PET比等工艺参数的影响。在180°C的反应温度,乙二醇/深共熔溶剂比为15,深共熔溶剂/聚对苯二甲酸乙二醇酯比为6的条件下,单体产物双(2-羟乙基)对苯二甲酸酯的最大收率为88%。
更新日期:2019-12-11
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