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Coatings 2016, 6(2), 17; doi:10.3390/coatings6020017

Novel Thiol-Ene Hybrid Coating for Metal Protection

1
Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, SA 5095, Australia
2
School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
*
Authors to whom correspondence should be addressed.
Academic Editor: Alessandro Lavacchi
Received: 13 January 2016 / Revised: 22 March 2016 / Accepted: 25 March 2016 / Published: 7 April 2016
(This article belongs to the Special Issue Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings)
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Abstract

A novel hybrid anticorrosion coating with dual network of inorganic (Si–O–Si) and organic bonds (C–S–C) was prepared on metal through an in situ sol-gel and thiol-ene click reaction. This novel interfacial thin film coating incorporates (3-mercaptopropyl) trimethoxysilane (MPTS) and 1,4-di(vinylimidazolium) butane bisbromide based polymerizable ionic liquid (PIL) to form a thiol-ene based photo-polymerized film, which on subsequent sol-gel reaction forms a thin hybrid interfacial layer on metal surface. On top of this PIL hybrid film, a self-assembled nanophase particle (SNAP) coating was employed to prepare a multilayer thin film coating for better corrosion protection and barrier performance. The novel PIL hybrid film was characterised for structure and properties using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The corrosion protection performance of the multilayer coating was examined using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results reveal that this novel double layer coating on metal offers excellent protection against corrosion and has remarkably improved the barrier effect of the coating. View Full-Text
Keywords: hybrid film; (3-mercaptopropyl)trimethoxysilane (MPTS); polymerizable ionic liquid (PIL); thiol-ene reaction hybrid film; (3-mercaptopropyl)trimethoxysilane (MPTS); polymerizable ionic liquid (PIL); thiol-ene reaction
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Taghavikish, M.; Subianto, S.; Dutta, N.K.; Roy Choudhury, N. Novel Thiol-Ene Hybrid Coating for Metal Protection. Coatings 2016, 6, 17.

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