Authors : M. Joshi, H. D. Juneja and J. P. Kanfade
Page Nos : 226-229
Description :
Abstract:
A series of new complexes of manganese (II), cobalt(II), nickel(II), copper(II) and zinc(II) have been synthesized with pimeloylcarboxymethyl cellulose (PCMC). The complexes have been characterized by elemental analysis, spectroscopic spectral measurements (IR, UV, Vis.), magnetic measurements and thermal studies. Tetrahedral structure was proposed for Ni(II) and Zn(II)complex while the square planar geometry was proposed for Cu(II) complex with PCMC. Octahedral structure was proposed for Mn(II) and Co(II) complexes of PCMC. The thermal decomposition study of the prepared complexes was monitored by TG analysis in dynamic atmosphere. TG studies confirmed the chemical formulations of theses complexes. The kinetic parameters were determined from the thermal decomposition data using the graphical methods of Freeman Carroll and Sharp Wentworth method. Thermodynamic parameters were calculated using standard relations.
Keywords: TGA, Thermal degradation, Freeman Carroll, carboxymethyl cellulose.
