Progress in Organic Coatings, ( ISI ), Volume (75), No (4), Year (2012-12) , Pages (502-508)

Title : ( Anticorrosion properties of smart coating based on polyaniline nanoparticles/epoxy-ester system )

Authors: Reza Arefinia , Akbar Shojaei , Homira Shariatpanahi , Jaber Neshati ,

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In this study, the anticorrosive effect of dodecylbenzenesulfonicacid-doped polyaniline nanoparticles [n-PANI (DBSA)] as a conductive polymer was investigated using electrochemical impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS) techniques. Initially, the n-PANI (DBSA) were successfully synthesized via inverse microemulsion polymerization leading to the spherical nanoparticles with an average diameter less than 30 nm. Two coating systems including 1 wt% n-PANI(DBSA) blended epoxy ester (n-PANI(DBSA)/EPE) and neat epoxy ester (EPE) were coated on the carbon steal substrate. The anticorrosion performance of the prepared coatings was studied using EIS measurement in 3.5% NaCl solution during 77 days. The experimental data was modeled using Zview software according to the appropriate equivalent circuit model. The results clearly showed the better corrosion protection of the n-PANI(DBSA)/EPE coating compared to the EPE coating. This behavior was attributed to the ability of n-PANI(DBSA) in releasing dopant anion when the corrosion process is initiated on the metal substrate emphasizing the smart protection of n-PANI(DBSA)/EPE coating. Accordingly, the released dopant anions along with the iron cations provide a secondary barrier layer, which passivates the substrate.

Keywords

Surface coating; Corrosion protection; Smart mechanism; Polyaniline;
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@article{paperid:1031827,
author = {Arefinia, Reza and Akbar Shojaei and Homira Shariatpanahi and Jaber Neshati},
title = {Anticorrosion properties of smart coating based on polyaniline nanoparticles/epoxy-ester system},
journal = {Progress in Organic Coatings},
year = {2012},
volume = {75},
number = {4},
month = {December},
issn = {0300-9440},
pages = {502--508},
numpages = {6},
keywords = {Surface coating; Corrosion protection; Smart mechanism; Polyaniline; Nanoparticles},
}

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%0 Journal Article
%T Anticorrosion properties of smart coating based on polyaniline nanoparticles/epoxy-ester system
%A Arefinia, Reza
%A Akbar Shojaei
%A Homira Shariatpanahi
%A Jaber Neshati
%J Progress in Organic Coatings
%@ 0300-9440
%D 2012

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