Inhibitor-loaded conducting polymer capsules for active corrosion protection of coating defects. (November 2016)

• Record Type: Journal Article
• Authors: Pirhady Tavandashti, N.; Ghorbani, M.; Shojaei, A.; Mol, J.M.C.; Terryn, H.; Baert, K.; Gonzalez-Garcia, Y.
• Is Part Of: Corrosion science. Volume 112(2016)
• Page Start: 138
• Page End: 149
• Publication Date: 2016-11
• Subjects: A. Organic coatings -- A. Polymer -- A. Aluminium -- B. EIS; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2016.07.003
• Languages: English
• ISSNs: 0010-938X

Abstract

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 performance due to the interesting smart characteristics of PANI capsules.