Glycolysis of poly(ethylene terephthalate) catalyzed by ionic liquids
By Hui Wang, Yan-qing Liu, Zengxi Li, Xiangping Zhang, Suojiang Zhang, Yanqiang Zhang. 2009
246 citations recorded by the source corpus.
Poly(ethylene terephthalate) (PET) from an industrial manufacturer was depolymerized by ethylene glycol in the presence of a novel catalyst: ionic liquids. It was found that the purification process of the products in the glycolysis catalyzed by ionic liquids was simpler than that catalyzed by traditional compounds, such as metal acetate. Qualitative analysis showed that the main product in the glycolysis process was the bis(hydroxyethyl) terephthalate (BHET) monomer. Thermal analysis of the glycolysis products was carried out by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The influences of experimental parameters, such as the amount of catalyst, glycolysis time, reaction temperature, and water content in the catalyst on the conversion of PET, selectivity of BHET, and distribution of the products were investigated. Results show that reaction temperature is a critical factor in this process. In addition, a detailed reaction mechanism of the glycolysis of PET was proposed. (C) 2009 Elsevier Ltd. All rights reserved.
Subfields: Biomaterials, Catalysis, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/89b83a59b8fd9c169e9590882510e723bcc987b8
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Citations in the corpus
- Poly (ethylene terephthalate) recycling for high value added textiles (2014, background): “A number of studies are summarized in Table 3, detailing the optimum glycolysis conditions and reaction parameters obtained (Dulio et al. 1995; Pingale et al. 2010; Xi et al. 2005; Troev et al. 2003; Shukla and Kulkarni 2002; Shukla et al. 2008; Imran et al. 2011; Wang et al. 2009; Yue et al. 2011).”
- Current status of recycling of fibre reinforced polymers: Review of technologies, reuse and resulting properties (2015, methodology): “Since then many different conditions and solvents were tried in order to recycle thermoplastics, thermosets and their fibre reinforced composites [40–85].”
- Chemical Recycling of PET Wastes with Different Catalysts (2015, methodology): “The trend shows that with increasing temperature the effect of ionic liquids is going to be more touchable and effect of Br is still the best in high temperature [9].”