Processable polyaniline-HCSA/poly(vinyl acetate-co-butyl acrylate) corrosion protection coatings for aluminium alloy 2024-T3: A SVET and Raman study

Gustavsson, JM; Innis, Peter C.; He, Jie; Wallace, Gordon G.; Tallman, Dennis E.

doi:10.1016/j.electacta.2008.09.043

Cited by 27 publications

(8 citation statements)

References 18 publications

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“…In fact, our results are agreement quite well with the previous report by Gustavsson et al, 28 where it was discussed that the reduction of the PANI-ES occurred more readily in close proximity to the defects of composite coating, which was indicative of the electrochemical interaction between the composite coating and the metal substrate rather than a barrier effect. The drop and rise of the OCP for the carbon steel coated by the composite coating in the NaCl solution was interpreted as a selfhealing effect with the release of dopant, which is similar to previous reports.…”

Section: Ocp and Eis Evaluation Of Long-term Anticorrosion Performancesupporting

confidence: 93%

“…The cyclical redox reaction between PANI-ES and LB forms associated with release of the dopant extended the period of ennoblement of the metal substrate. 17,21,27 However, the anticorrosion mechanism of PANI is indeed somewhat disputed, [28][29][30][31] since the electrochemical activity of PANI is very much dependent on different conditions.…”

Section: Introductionmentioning

confidence: 99%

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Towards the mechanism of electrochemical activity and self-healing of 1 wt% PTSA doped polyaniline in alkyd composite polymer coating: combined AFM-based studies

Huang

Fielden

et al. 2016

RSC Adv.

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Section: Ocp and Eis Evaluation Of Long-term Anticorrosion Performancesupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Towards the mechanism of electrochemical activity and self-healing of 1 wt% PTSA doped polyaniline in alkyd composite polymer coating: combined AFM-based studies

Huang

Fielden

et al. 2016

RSC Adv.

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“…In other cases, despite initial protection, as soon as the conducting polymer failed to provide active protection, fast and total reduction of the whole ICP film lead to total failure. These reports show how close positive and negative effects can be when ICPs are utilized as coatings …”

Section: Introductionmentioning

confidence: 80%

Epoxy‐based PANI/zinc oxide/glass fiber nanocomposite coating for corrosion protection of carbon steel

Rouhollahi¹,

Khaleghi²

2017

Materials & Corrosion

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In this work, a nanocomposite based on conductive polyaniline (PANI) was polymerized, via reverse microemulsion polymerization, in the presence of phosphoric acid and dodecylbenzenesulfonic acid. Applied simultaneously, these acids act as dopants, increasing the solubility of PANI in organic solvents. They further improve the corrosion protection performance of PANI by forming phosphate‐metal complex on metal surface. Zinc oxide nanoparticles were added to the PANI mixture before introducing ammonium persulfate. The final product of polymerization was added to an epoxy resin which served as the matrix for the coating. In order to improve coating elasticity, which can enhance coating resistance against impacts, E‐glass fiber (GF) was added to the coating formulation. It was observed that, with an optimized w/w%, the PANI/zinc oxide/GF composite improved the coating characteristics. Coatings were further subjected to stress‐strain and DC polarization tests, and their cross‐sections were investigated at break point by means of SEM. DC polarization plots revealed that the addition of zinc oxide can also shift the corrosion potential of steel toward positive potentials.

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“…However, such coatings are prone to fast and disastrous breakdown as soon as large defects are inflicted into the coating. Then the coupling between ICP and the exposed metal in the defect may even lead to an enhanced corrosion, see e. g. Gustavsson et al [75]. This is the main reason why only very few studies of electrodeposited ICP coatings were included into this discussion, although excellent work has been carried out in depositing good quality ICP-coatings onto reactive materials.…”

Section: The Mechanism Of Shifting the Site Of Oxygen Reductionmentioning

confidence: 97%

Conducting polymers for corrosion protection: a review

Rohwerder

2009

International Journal of Materials Research

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Since the first reported publications about their possible application for corrosion protection, conducting polymers are discussed as promising candidates for a new generation of corrosion control coatings. However, although research has started about three decades ago and certainly about a thousand publications have been published on this topic, their technical application has not yet made its breakthrough.The reason for this is that most coatings based on conducting polymers fail so far under practical corrosion conditions. Reasons will be discussed in this paper, as well as future challenges. As will be shown, conducting redox polymers such as polypyrrole or polyaniline indeed posses a promising potential for intelligent corrosion protection, but up to now this potential has not been explored.

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Processable polyaniline-HCSA/poly(vinyl acetate-co-butyl acrylate) corrosion protection coatings for aluminium alloy 2024-T3: A SVET and Raman study

Cited by 27 publications

References 18 publications

Towards the mechanism of electrochemical activity and self-healing of 1 wt% PTSA doped polyaniline in alkyd composite polymer coating: combined AFM-based studies

Towards the mechanism of electrochemical activity and self-healing of 1 wt% PTSA doped polyaniline in alkyd composite polymer coating: combined AFM-based studies

Epoxy‐based PANI/zinc oxide/glass fiber nanocomposite coating for corrosion protection of carbon steel

Conducting polymers for corrosion protection: a review

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