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scanning-vibrating-electrode-technique
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Inhibitor-loaded conducting polymer capsules for active corrosion protection of coating defects
, Article Corrosion Science ; Volume 112 , 2016 , Pages 138-149 ; 0010938X (ISSN) ; Ghorbani, M ; Shojaei, A ; Mol, J. M. C ; Terryn, H ; Baert, K ; Gonzalez Garcia, Y ; Sharif University of Technology
Elsevier Ltd
Abstract
This work presents the synthesis of nanostructured hollow polyaniline (PANI) capsules and their application for encapsulation of corrosion inhibitor 2-Mercaptobenzothiazole (MBT). The pH-triggered release of MBT from the capsules was evidenced using UV–vis and Surface Enhanced Raman Spectroscopy (SERS). Incorporation of MBT loaded PANI capsules into epoxy ester coating on AA2024-T3 resulted in a protective system with self-healing ability confirmed by Electrochemical Impedance Spectroscopy (EIS) and Scanning Vibrating Electrode Technique (SVET). The results showed that the incorporation of MBT-loaded PANI capsules into the coating has significantly improved its corrosion protection...
PH responsive Ce(III) loaded polyaniline nanofibers for self-healing corrosion protection of AA2024-T3
, Article Progress in Organic Coatings ; Volume 99 , 2016 , Pages 197-209 ; 03009440 (ISSN) ; Ghorbani, M ; Shojaei, A ; Gonzalez Garcia, Y ; Terryn, H ; Mol, J. M. C ; Sharif University of Technology
Elsevier
2016
Abstract
Cerium nitrate loaded polyaniline (PANI) nanofibers were synthesized in this work via a chemical route. PANI nanofibers act as a host structure for the corrosion inhibitor, forming a Ce(III)-PANI complex. This complex is pH sensitive, and a change of pH can cause breaking of the complex and releasing of Ce(III). The Ce(III) loaded PANI nanofibers were embedded into epoxy ester coating and the self-healing corrosion protection ability was investigated by Scanning Vibrating Electrode Technique (SVET) and Electrochemical Impedance Spectroscopy (EIS). The results showed that by embedding of Ce(III) loaded PANI nanofibers into the coatings a superior corrosion protection and self-healing...
PH-responsive nanostructured polyaniline capsules for self-healing corrosion protection: the influence of capsule concentration
, Article Scientia Iranica ; Volume 24, Issue 6 , 2017 , Pages 3512-3520 ; 10263098 (ISSN) ; Ghorbani, M ; Shojaei, A ; Mol, J. M. C ; Terryn, H ; Gonzalez Garcia, Y ; Sharif University of Technology
Abstract
Nanostructured hollow polyaniline (PANI) capsules are good candidates for encapsulation of corrosion inhibitors and pH-responsive release when incorporated into organic coatings. In previous studies, the corrosion protection performance of PANI capsules, containing organic inhibitor 2-Mercaptobenzothiazole (MBT), was demonstrated. The present work studies the influence of capsule concentrations (i.e., 0.3, 1, and 2 wt%) on the corrosion protection properties of the coating system. Anti-corrosion properties of different coatings were compared by means of Electrochemical Impedance Spectroscopy (EIS) and Scanning Vibrating Electrode Technique (SVET). MBT loaded PANI capsules in epoxy ester...