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Effect of polyaniline colloids on the corrosion of mild steel

Conference Paper


Abstract


  • The influence of electrochemically produced polyaniline colloid dispersions on the corrosion of mild steel in 0.25 M H2SO4 and 3.5% NaCl have been investigated. The colloid dispersions were stabilized and simultaneously doped by polystyrene sulfonate and co-doped with the further addition of corrosion inhibiting anions. Results indicate that mild steel can be passivated at lower potentials in the presence of polyaniline - polystyrene sulfonate colloids co-doped with phosphate, p-toluene sulfonate, nitrate and camphor sulfonate anions in the presence of H2SO4. No significant anti-corrosion activity was noted for polyaniline - polystyrene sulfonate by itself. No anti-corrosion activity was observed in 3.5% NaCl solution. Using colloid dispersions in solution, the true anti-corrosion properties of polyaniline have been probed without competing barrier properties that can be imparted by non-conductive carrier coatings commonly used in similar studies.

Publication Date


  • 1998

Citation


  • Innis, P. C., Spinks, G., & Wallace, G. G. (1998). Effect of polyaniline colloids on the corrosion of mild steel. In Annual Technical Conference - ANTEC, Conference Proceedings Vol. 2 (pp. 1224-1228).

Scopus Eid


  • 2-s2.0-0031680966

Start Page


  • 1224

End Page


  • 1228

Volume


  • 2

Abstract


  • The influence of electrochemically produced polyaniline colloid dispersions on the corrosion of mild steel in 0.25 M H2SO4 and 3.5% NaCl have been investigated. The colloid dispersions were stabilized and simultaneously doped by polystyrene sulfonate and co-doped with the further addition of corrosion inhibiting anions. Results indicate that mild steel can be passivated at lower potentials in the presence of polyaniline - polystyrene sulfonate colloids co-doped with phosphate, p-toluene sulfonate, nitrate and camphor sulfonate anions in the presence of H2SO4. No significant anti-corrosion activity was noted for polyaniline - polystyrene sulfonate by itself. No anti-corrosion activity was observed in 3.5% NaCl solution. Using colloid dispersions in solution, the true anti-corrosion properties of polyaniline have been probed without competing barrier properties that can be imparted by non-conductive carrier coatings commonly used in similar studies.

Publication Date


  • 1998

Citation


  • Innis, P. C., Spinks, G., & Wallace, G. G. (1998). Effect of polyaniline colloids on the corrosion of mild steel. In Annual Technical Conference - ANTEC, Conference Proceedings Vol. 2 (pp. 1224-1228).

Scopus Eid


  • 2-s2.0-0031680966

Start Page


  • 1224

End Page


  • 1228

Volume


  • 2