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Issue 40, 2014
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Polyorthotoluidine dispersed castor oil polyurethane anticorrosive nanocomposite coatings

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Abstract

The present article reports the synthesis and corrosion protection performance of polyorthotoluidine (POT) nanoparticles dispersed castor oil polyurethane (COPU) nanocomposite coatings in acid and saline environments. The structure of POT/COPU was confirmed by FTIR and UV-visible spectroscopic techniques. The nanostructure of the pristine POT nanoparticles and those in the composite was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The physico-mechanical properties were analyzed using standard methods. The corrosion protective performance was evaluated by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy in an acid medium. While in the saline environment the corrosion protective performance was investigated in a salt mist chamber using a 5% NaCl solution for 30 days. The morphological behavior of the corroded and un-corroded coated specimen was investigated by SEM studies. The stipulated acid and saline corrosion mechanism was also discussed.

Graphical abstract: Polyorthotoluidine dispersed castor oil polyurethane anticorrosive nanocomposite coatings

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Article information


Submitted
21 Jan 2014
Accepted
17 Mar 2014
First published
17 Mar 2014

RSC Adv., 2014,4, 20984-20999
Article type
Paper
Author version available

Polyorthotoluidine dispersed castor oil polyurethane anticorrosive nanocomposite coatings

M. Kashif and S. Ahmad, RSC Adv., 2014, 4, 20984
DOI: 10.1039/C4RA00587B

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