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Anticorrosive acrylic intelligent paint

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Abstract

The use of intrinsically conductive polymers, such as polyaniline (PAni), has been presented as an option for coatings or component of organic coatings with anticorrosive properties due to their electrochemical properties. From this, in this study was produced a binder composed by mixture of PAni base emeraldine (BE) to a plasticizer electrochemically inert plasticiser. The blend was added to a commercial acrylic paint (CAP), for the production of an acrylic intelligent paint (AIP) with anticorrosion properties, acting in anodic protection of carbon steel. The paint produced was characterized by physical–chemical methods of thickness measurement, scanning electron microscopy and RAMAN spectroscopy, which presented results indicating that the PAni BE binder is contained in the CAP, in resin form, in addition to preserve the main functions and desirable electrochemical characteristics of PAni for application as an anticorrosive coating. The electrochemical tests of cyclic voltammetry, open circuit potential and electrochemical impedance spectroscopy demonstrated that AIP acts to protect against corrosion of carbon steel via anodic protection.

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Correspondence to Rodrigo Sanchotene Silva.

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Silva, R.S., Ferreira, J.Z. & Meneguzzi, A. Anticorrosive acrylic intelligent paint. Chem. Pap. 74, 631–639 (2020) doi:10.1007/s11696-019-00909-4

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Keywords

  • Intelligent paint
  • Corrosion
  • Anodic protection