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Bioinorganic Chemistry and Applications
Volume 2010, Article ID 848130, 8 pages
http://dx.doi.org/10.1155/2010/848130
Research Article

Coordination Polymer: Synthesis, Spectral Characterization and Thermal Behaviour of Starch-Urea Based Biodegradable Polymer and Its Polymer Metal Complexes

1Materials Research laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
2Department of Chemistry, King Saud University, Riyadh 1145, Saudi Arabia

Received 18 February 2009; Revised 19 July 2009; Accepted 30 March 2010

Academic Editor: Dimitris Kessisoglou

Copyright © 2010 Ashraf Malik et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A starch-urea-based biodegradable coordination polymer modified by transition metal Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) was prepared by polycondensation of starch and urea. All the synthesized polymeric compounds were characterized by Fourier transform-infrared spectroscopy (FT-IR), spectroscopy, spectroscopy, UV-visible spectra, magnetic moment measurements, differential scanning calorimeter (DSC), and thermogravimetric analysis (TGA). The results of electronic spectra and magnetic moment measurements indicate that Mn(II), Co(II), and Ni(II) complexes show octahedral geometry, while Cu(II) and Zn(II) complexes show square planar and tetrahedral geometry, respectively. The thermogravimetric analysis revealed that all the polymeric metal complexes are more thermally stable than the parental ligand. In addition, biodegradable studies of all the polymeric compounds were also carried out through ASTM standards of biodegradable polymers by evolution method.