A comparative study on fabrication of a highly effective corrosion protective system based on graphene oxide-polyaniline nanofibers/epoxy composite

•GO-PANIs/Epoxy nanocomposites were fabricated and analyzed.•GO-PANI composites improved the corrosion resistance of the epoxy coating.•GO-PANI I significantly improved the barrier/active performance of epoxy coating. Graphene oxide nanosheets were functionalized with polyaniline (PANI) nanofibers t...

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Bibliographic Details
Published in:Corrosion science 2018-04, Vol.133, p.358-373
Main Authors: Hayatgheib, Y., Ramezanzadeh, B., Kardar, P., Mahdavian, M.
Format: Article
Language:English
Subjects:
A. Steel
Ammonium peroxodisulfate
Aniline
B. EIS
B. TEM
B. XRD
C. Polymer coatings
Comparative studies
Corrosion prevention
Corrosion resistance
Electrochemical impedance spectroscopy
Epoxy coatings
Graphene
Morphology
Nanocomposites
Nanofibers
Nanostructure
Organic chemistry
Polyanilines
Polymerization
Protective coatings
Sodium dodecyl sulfate
Substrates
Surfactants
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Summary:•GO-PANIs/Epoxy nanocomposites were fabricated and analyzed.•GO-PANI composites improved the corrosion resistance of the epoxy coating.•GO-PANI I significantly improved the barrier/active performance of epoxy coating. Graphene oxide nanosheets were functionalized with polyaniline (PANI) nanofibers through three methods In method II the polymerization of aniline was done in the presence of sodium dodecyl sulfate as a surfactant and ammonium persulfate as an initiator. In method I the surfactant and in method III the initiator were eliminated during polymerization procedure. The morphology and chemistry of the nanosheets were characterized. Then, the GO/epoxy and GO-PANIs/epoxy nanocomposites were fabricated and their corrosion protection performance was studied on steel substrate by electrochemical impedance spectroscopy. Results revealed that GO-PANI remarkably improved the barrier performance and provided active inhibition for epoxy coating.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2018.01.046