Abstract

Metal complexes of polymer based on poly methyl methacrylate (PMMA) were prepared by the in situ bulk polymerization of methyl methacrylate with different molar concentrations of salts of iron II chloride and cobalt II nitrate. These complexes were characterized by FTIR and UV spectroscopic studies revealed that the metal is coordinated to carbonyl oxygen and methoxy oxygen of methacrylate moiety. The surface morphology of these composite was studied with scanning electron microscope (SEM), indicated that metal incorporated polymer exhibit well dispersed structures. The basic decomposition pattern and thermal stability of the samples were carried out using TGA. The incorporation of metal in main chain of PMMA enhances excellent thermal resistance. Lower concentration of metal incorporated PMMA has superior thermal stability than higher dosage of metals. The a.c. conductivity behavior was investigated in the frequency range of 102–106 at room temperature. The molar concentrations of metal particle in the polymer matrix have greater influence on the observed conductivity values. Nickel (II) complexes of poly (methyl methacrylate) have better conductivity, dielectric constant and loss factor than that of iron (II) introduced polymer matrix.

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