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Deep eutectic solvent as effective catalyst for aminolysis of polyethylene terephthalate (PET) waste

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International Journal of Plastics Technology

Abstract

Aminolytic depolymerization of poly (ethylene terephthalate) (PET) bottle waste was carried out by diethanolamine and ethanolamine using synthesized deep eutectic solvents, choline chloride.x ZnCl2 and choline chloride.2 urea, as catalyst. The reaction parameters were optimized through variation in the time of aminolysis, catalyst concentration and the PET: amine ratio. Pure products N1,N1,N4,N4-tetrakis (2-hydroxyethyl)-terephthalamide (THETA) and terephthalic acid (TPA), and bis (2-hydroxy ethylene) terephthalamide (BHETA) in yields 82, 83 and 95 % respectively, were obtained. These products were characterized by FTIR spectroscopy, 1H NMR, 13C NMR spectroscopy and differential scanning calorimetry.

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Acknowledgments

Authors are thankful to University Grant Commission, New Delhi for fellowship to Rakesh Musale.

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Authors and Affiliations

  1. Department of Fibres and Textile Processing Technology, Institute of Chemical Technology (University Under Section-3 of UGC Act 1956), Nathalal Parekh Marg, Matunga, Mumbai, 400019, India

    Rakesh M. Musale & Sanjeev R. Shukla

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  2. Sanjeev R. Shukla
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Correspondence to Sanjeev R. Shukla.

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Musale, R.M., Shukla, S.R. Deep eutectic solvent as effective catalyst for aminolysis of polyethylene terephthalate (PET) waste. Int J Plast Technol 20, 106–120 (2016). https://doi.org/10.1007/s12588-016-9134-7

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  • DOI: https://doi.org/10.1007/s12588-016-9134-7

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