Abstract

P. Kamatchi Selvaraj_,  S. Sivakumar and S. Selvaraj

DOI : http://dx.doi.org/10.13005/ojc/3404017

Solubility problem of composite in aqueous medium is resolved on  adding Al₂O₃ during the oxidative polymerization of aniline using ammonium peroxydisulphate as an oxidant and sodium salt of dodecyl bezenesulphonic acid  as surfactant and dopant at  273 K temperature.  The yielded water soluble Al₂O₃-PANI composite is confirmed by comparing the FTIR, XRD and SEM recorded spectra with previously reported one.  Gravimetric method exposes that the prepared composite is having confrontation  against corrosion. Only a slight change in efficiency on continuous exposure up to eight hours is observed.  OCP data are transformed in to potential graph to exposes the invincibility of the composite against corrosion.  Measurement of  potentiodynamic polarization and EIS studies also confirms the defiance against corrosion.

Al2O3-PANI; EIS; Mild Steel; OCP; Potentiodynamic Polarization

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