A novel conducting polyamic acid/nanocomposite coating for corrosion protection

Abstract

Corrosion are of paramount interests to a researcher due to their important impacts on both people’s safety and economy. A recent strategy bases on a new material has been utilized for mitigating corrosions. Conducting polymer-based Nano composites are classes of material that can be promising for corrosion protection. PAA- Nano composites on mild steel (MS) and Electropolymerization of polyamic acid (PAA) was applied in monomer solutions by the techniques of constant potential. The protection property of coating was investigated in 3.5% solution of NaCl by Tafel polarizations at varied temperature (293 - 323K). The effect of varied Nano materials (ZnO and Graphen (G)) upon the protections performances of the Nano composite coating were compared. The results revealed that PAA/Nano composite and PAA provides the best performances for corrosions protections of the MS by reducing its corrosions current densities in comparison with the blank MS. In addition, this coating is featured by AFM, and FT-IR, SEM method. Also، the effect of increasing temperature presented as thermodynamic and kinetic parameters {Ea, ΔH*, ΔS*, and ΔG*}, were calculated and discussed.