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      https://www.ias.ac.in/article/fulltext/jcsc/128/06/0883-0891

    • Keywords

       

      Ring opening polymerization (ROP); Lactide; Salicylaldimine; copper complex; PLA.

    • Abstract

       

      Salicylaldimine copper complex has been synthesized and its reactivity for the ring-opening polymerization(ROP) of lactide has been studied. This monomeric copper complex was prepared by the reaction ofcopper(II) solution with one molar equivalent of salicylaldimine Schiff-base ligand in methanol under nitrogenatmosphere. This copper complex has been characterized by different spectroscopic methods, which showedsquare planar geometry. The molecular structure of the salicylaldimine Schiff-base has been determined byX-ray diffraction studies. The complex was tested as the initiator for the ring-opening polymerization of lactide,with variation in diamine group in ligand. The rate of polymerization is dependent on the diamine groupin the following order: ethylene > propylene > phenyl. The salicylaldimine copper complex allows controlledring-opening polymerization as indicated by the linear relationship between the percentage conversion and thenumber-average molecular weight. On the basis of literature reports, a mechanism for ROP of lactide has beenproposed.

    • Author Affiliations

       

      ANITA ROUTARAY1 NIBEDITA NATH1 TUNGABIDYA MAHARANA2 PRATAP KUMAR SAHOO3 JAYA PRAKASH DAS1 ALEKHA KUMAR SUTAR1

      1. Catalysis Research Lab, Department of Chemistry, Ravenshaw University, Cuttack, Odisha, 753 003, India
      2. Department of Chemistry, National Institute of Technology, Raipur, 492 010, India
      3. School of Physical Sciences, National Institute of Science Education and Research, Bhubaneswar, Odisha, 751 005, India
    • Dates

       
    • Supplementary Material

       
  • Journal of Chemical Sciences | News

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