Synthesis and Characterization of Poly Anthranilic Acid Metal Nanocomposites

Irudaya Antonat Sophia, G. Gopu, C. Vedhi

Department of Chemistry, V. O. Chidambaram College, Thoothukudi, India.
Department of Industrial Chemistry, Alagappa University, Karaikudi, India.

DOI: 10.4236/ojsta.2012.11001                

Abstract

Intrinsically conducting polymer metal nanocomposites were synthesized by polymerising anthranilic acid (PANA) with metal salts like ferric chloride, Zinc oxide and Magnesium oxide by chemical oxidation method. Polyanthranilic acidiron nano composite (PANA-Fe), Polyanthranilic acid-Zinc nano composite(PANA-Zn) and Polyanthranilic acid-magnesium nano composite (PANA-Mg) synthesized were characterised by UV-Visible and FTIR studies. FTIR spectra of polymer-metal nano composites showed peaks in the region between 1690 cm^-1 and 1490 cm^-1 which corresponds to the deformation in different types of N-H bond. The participation of the -NH group in polymerization was confirmed by the appearance of a peak around 3431 cm^-1. Cyclic voltammetric studies revealed the presence of an adherent polymer film on the glassy carbon electrode and showed redox behavior of the polymer metal nanocomposites. The XRD (XRay Diffraction) studies showed a rather more crystalline behaviour of the nano composites and the grain size was calculated using Scherrer’s formula and it was found to be in nano range. SEM (Scanning Electron Microscope) analysis showed a rather mixed crystalline and amorphous behavior. EDAX (Energy Dispersive X Ray Spectroscopy) confirms the incorporation of the metals iron, Zinc and Magnesium in the polymermetal nano composites. The inhibition efficiency of the polymermetal nano composites were calculated for stainless steel in acidic environment using elec-trochemical impedance spectroscopy (EIS) and polarization (Tafel) studies and the prepared PANA-Fe and PANA-Zn nano composites showed effective anti-corrosive behavior on stainless steel in acid medium.

Keywords

Poly Anthranilic Acid; Polymer Metal Nanocomposites; Cyclic Voltammetry; EIS; SEM; TEM

Conflicts of Interest

The authors declare no conflicts of interest.

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