Synthesis of polytetrahydrofuran using protonated kaolin as a solid acid catalyst

DOI: https://doi.org/10.9767/bcrec.0.0.2605.xxx-xxx
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Submitted: 02-05-2018
Published: 25-01-2019
Section: Original Research Articles
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In this work, a non-toxic protonated kaolin clay exchanged with protons, was successfully applied as a solid acid catalyst for the polymerization of polytetrahydrofuran (polyTHF) at room temperature in the presence of acetic anhydride. Prior to using the kaolin as a catalyst, it was treated with HCl (0.1 M) and characterized using various analytical techniques. The amounts of catalyst and reaction time on the conversion of THF were investigated. H-NMR, FTIR, XRD, OM and DSC techniques were used to examine the resulting polymer. The results show that the conversion rate of THF reaches 50.02% after 20 hours. X-ray analysis and DSC data indicated that the obtained (polyTHF) is a highly crystalline substance.

Received: 2nd May 2018; Revised: 28th November 2018; Accepted: 12nd December 2018

Keywords

Catalysis; Polymer synthesis; Cationic Polymerization; Kaolin; Polytetrahydrofuran

  1. Abdelhak Moumen 
    Laboratory of Water Treatment and Valorization of Industrial Waste, Faculty of Sciences, Department of Chemistry, Badji-Mokhtar University, BP12, 23000, Annaba, Algeria. Faculty of Technology, Department of Petrochemical and Process Engineering, University of 20 Août 1955 Skikda, Algeria., Algeria
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