The Electrodeposition of Derivatives of Pyrrole and Thiophene on Brass Alloy in the Presence of Dodecane-1-Sulfonic Acid Sodium Salt in Acidic Medium and Its Anti-Corrosive Properties

In this paper, potentiostatic and galvanostatic deposition (electrochemical deposition) processes have been used for the obtained of a new composite polymer: N-methylpyrrole-sodium 1-dodecanesulfonate/poly 2-methylthiophene (PNMPY-1SSD/P2MT) coatings over brass electrode corrosion protection. The sodium 1-dodecanesulfonate as dopant ion employed in electropolymerization procedure can meaningful effect on anti-corrosion protection polymeric film by stopping penetration corrosive ions. characterized cyclic voltammetry, Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM) procedures. performance PNMPY-1SSD/P2MT coated has investigated potentiodynamic polarization electrochemical impedance spectroscopy (EIS) practices 0.5 M H2SO4 medium. assessment was noticed to be ~9 times diminished than uncoated brass, efficiency these protective coating is above 90%. highest effectiveness realized at 1.1 V 1.4 potential applied mA/cm2 1 current densities molar ratio 5:3. outcomes tests denoted that assure good media.