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      https://www.ias.ac.in/article/fulltext/boms/027/03/0235-0241

    • Keywords

       

      Cardanol; polyurethane; diphenylmethane diisocyanate; polypropylene glycol-2000.

    • Abstract

       

      Cardanol, an excellent monomer for polymer production, has been isolated from CNSL and allowed to react with formaldehyde in a particular mole ratio in the presence of glutaric acid catalyst to give high-ortho novolac resin. Such characterized polyol has been condensed with diphenylmethane diisocyanate to produce rigid polyurethane. A commercially available polyol, polypropylene glycol-2000 (PPG-2000), has also been condensed with diphenylmethane diisocyanate and polyol to produce tough polyurethane. These polyurethanes were characterized with respect to their resistance to chemical reagents and mechanical properties such as tensile strength, percentage elongation, tear strength and hardness. Differential thermal analysis (DTA) and thermo-gravimetric analysis (TGA) were undertaken for thermal characterization.

    • Author Affiliations

       

      C V Mythili1 A Malar Retna1 S Gopalakrishnan1

      1. Department of Chemistry, Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli 627 012, India
    • Dates

       
  • Bulletin of Materials Science | News

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