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Issue 7, 2009
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Polyelectrolyte complexes as a “smart” depot for self-healing anticorrosion coatings

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Abstract

Various types of “intelligent” self-healing anticorrosion coatings using stimuli-responsive behaviour of polyelectrolyte/inhibitor complexes are presented. Flat nanocomposite multilayers as well as colloidally-templated micro- and nanocarriers with incorporated inhibitor are employed as main building blocks for the formation of novel protective materials. The corrosion inhibitor is incorporated as a structural element (organic molecule), as an inorganic precipitate or in a porous inorganic particle. Being induced by local pH changes during corrosion development, polyelectrolyte/inhibitor complexes afford the unique ability of active feedback and sustained release of inhibitor exactly at the corrosion-damaged sites. Elimination of the corrosive attack returns the complex layer back into the sealed state, providing effective storage and consumption of inhibitor. Insertion of complex-based elements into the coating matrix not only allows the combination of passive and active corrosion protection but also imparts the self-healing properties.

Graphical abstract: Polyelectrolyte complexes as a “smart” depot for self-healing anticorrosion coatings

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Publication details

The article was received on 30 Aug 2008, accepted on 05 Jan 2009 and first published on 09 Feb 2009


Article type: Paper
DOI: 10.1039/B815147D
Soft Matter, 2009,5, 1426-1432

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    Polyelectrolyte complexes as a “smart” depot for self-healing anticorrosion coatings

    D. O. Grigoriev, K. Köhler, E. Skorb, D. G. Shchukin and H. Möhwald, Soft Matter, 2009, 5, 1426
    DOI: 10.1039/B815147D

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