Active anticorrosion coatings with halloysite nanocontainers
authors Shchukin, DG; Lamaka, SV; Yasakau, KA; Zheludkevich, ML; Ferreira, MGS; Mohwald, H
nationality International
journal JOURNAL OF PHYSICAL CHEMISTRY C
keywords CORROSION PROTECTION; DELIVERY SYSTEM; THIN-FILMS; INHIBITORS; PRETREATMENTS; MICROSPHERES; CHROMATE; SILICA
abstract This work contributes to the development of a new generation of active corrosion protection coatings composed of hybrid sol-gel films doped with halloysite nanotubes able to release entrapped corrosion inhibitors in a controllable way. A silica-zirconia-based hybrid film was used in this work as an anticorrosion coating deposited on 2024 aluminum alloy. Halloysite nanotubes with inner voids loaded by corrosion inhibitors (2-mercaptobenzothiazole) and outer surfaces layer-by-tayer covered with polyelectrolyte multilayers were introduced into the hybrid films. The sol-gel film with the nanocontainers reveals enhanced long-term corrosion protection in comparison with the undoped sol-gel film. This effect is obtained because of the self-controlled release of the corrosion inhibitor triggered by the corrosion processes. Utilization of the inner halloysite nanotube lumen as a storage medium for the corrosion inhibitor offers a novel way of fabricating composite core-shell type nanomaterials with their further application as a main component of feedback-active coatings.
publisher AMER CHEMICAL SOC
issn 1932-7447
year published 2008
volume 112
issue 4
beginning page 958
ending page 964
digital object identifier (doi) 10.1021/jp076188r
web of science category Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000252619100013
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  impact metrics
journal impact factor (jcr 2016): 4.536
5 year journal impact factor (jcr 2016): 4.796
category normalized journal impact factor percentile (jcr 2016): 78.450
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