Abstract—A Series of Schiff base transition metal complexes have been synthesized and its reactivity for the ring-opening polymerization (ROP) of lactide has been studied. These metal complexes were synthesized by the reactions of metal salt solution with one molar equivalent of bulky Schiff-base ligand in methanol under nitrogen atmosphere. These complexes have been tested as initiators for the ring-opening polymerization of lactide with variation of concentration, time, solvent, etc. The transition metal complexes allow controlled ring-opening polymerization as shown by the linear relationship between the percentage conversion and the number-average molecular weight.
Index Terms—Lactide, polymerization, ROP, schiff base, transition metal.
S. Mantri is with the Ravenshaw University, India
H. C. Pradhan is with the National Institute of Technology, Raipur, India
T. Maharana is with the Department of Chemistry, National Institute of Technology, Raipur, India (e-mail: mtungabidya@gmail.com)
A. K. Sutar is with Catalysis Research Lab, Department of Chemistry, Ravenshaw University, Cuttack-3, Odisha, India (e-mail: dralekhasutar@gmail.com).
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Cite: S. Mantri, H. C. Pradhan, T. Maharana, and A. K. Sutar, "Schiff Base Transition Metal Complexes for ROP of L-Lactide," International Journal of Chemical Engineering and Applications vol. 8, no. 2, pp. 122-126, 2017.
