PHYSICO-CHEMICAL STUDY OF POLYANILINE/FLYASH COMPOSITES

Abstract

Insitu polymerization of aniline with chemical was carried out in presence of Fly ash (FA) to synthesize polyaniline/fly ash composites(PANI/FA) doped with H3PO4 1:1,1:2 composition of FA in PANI, and after that undoped these composites with ammonia. The composites thus synthesized have been characterized by Ultraviolet-Visible spectroscopy, FTIR, X-ray diffraction, TGA, conductivity have been measured by four probe method .The morphology of samples was studied by scanning electron microscopy. Corrosioninhibition performance of Polyaniline and its composites with Flyash carried by Tafel method,Sample was prepared by make blends with 5% loading of Polyaniline and Polyaniline/Flyash composites with epoxy resin,after these powder is coated on iron electrode of dimension of 1 cm x 1cm by powder coating instrument. Check corrosion inhibition performance at room temperature in aqueous solution of 1.0 M HCl by using potentiodynamic polarization technique. Corrosion efficiency increases as flyash concentration increases.