ANITA ROUTARAY
Articles written in Journal of Chemical Sciences
Volume 128 Issue 6 June 2016 pp 883-891 Regular Article
Salicylaldimine Copper(II) complex catalyst: Pioneer for ring opening Polymerization of Lactide
ANITA ROUTARAY NIBEDITA NATH TUNGABIDYA MAHARANA PRATAP KUMAR SAHOO JAYA PRAKASH DAS ALEKHA KUMAR SUTAR
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.
Volume 132 All articles Published: 22 January 2020 Article ID 0025
HARISH CHANDRA PRADHAN SOMANATH MANTRI ANITA ROUTARAY TUNGABIDYA MAHARANA ALEKHA KUMAR SUTAR
In the present study, the cobalt (II) complex [Co-HMBED] has been prepared and characterized by spectrochemical techniques, which confirmed its square planar structure. The catalytic activity of the cobalt complex was evaluated towards solvent-free conversion of CO2 and styrene oxide into cyclic styrene carbonate and polymerization of lactide
Volume 135, 2023
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