Inhibitor-loaded conducting polymer capsules for active corrosion protection of coating defects

Nahid Pirhady Tavandashti, M. Ghorbani, A. Shojaei, Arjan Mol, Herman Terryn, K. Baert, Yaiza Gonzalez Garcia

    Research output: Contribution to journalArticleScientificpeer-review

    93 Citations (Scopus)

    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.
    Original languageEnglish
    Pages (from-to)138-149
    JournalCorrosion Science: the journal on environmental degradation of materials and its control
    Volume112
    DOIs
    Publication statusPublished - 2016

    Keywords

    • A. Organic coatings
    • A. Polymer
    • A. Aluminium
    • B. EIS

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