Synthesis of Self Doped Polyaniline-Clay Nanocomposites in ScCO2 for Application in a Zinc Rich Epoxy Coating

Akbarinezhad, E.; Ebrahimi, M.; Sharif, F.; Attar, M. M.

Synthesis of Self Doped Polyaniline-Clay Nanocomposites in ScCO2 for Application in a Zinc Rich Epoxy Coating

Authors

¹ Coating Research Center, Research Institute of Petroleum Industry

² Polymer Engineering and Color Technology Department, Amirkabir University of Technology

³ Polymer Engineering and Color Technology Department, دانشگاه صنعتی امیرکبیر

⁴ Department of Polymer Engineering and Color Technology, Amirkabir University of Technology

Abstract

Self doped polyaniline-clay nanocomposite was synthesized via copolymerization of aniline and 3-amino benzene sulfonic acid with ammonium peroxydisulfate in ScCO2 in the presence of Cloisite 30B nano-clay. Self doped polyaniline was sunthesized in the same procedure. The synthesized self doped polyaniline and self doped polyaniline-clay nanocomposite were added into the epoxy and zinc rich epoxy coatings, separately. Corrosion protective properties of synthesized products were analyzed via determination of water vapor transmission and determining free corrosion potential (Ecorr.) and electrochemical impedance spectroscopy. Results revealed that the best protective performances were achieved by using self doped polyaniline-clay nanocomposite.

Keywords