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Open AccessFeature PaperArticle

Easy and Fast Fabrication of Self-Cleaning and Anti-Icing Perfluoroalkyl Silane Film on Aluminium

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Jožef Stefan Institute, Department of Physical and Organic Chemistry, Jamova c. 39, SI-1000 Ljubljana, Slovenia
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Jožef Stefan Institute, Department of Thin Films and Surfaces, Jamova c. 39, SI-1000 Ljubljana, Slovenia
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Author to whom correspondence should be addressed.
Coatings 2020, 10(3), 234; https://doi.org/10.3390/coatings10030234
Received: 12 February 2020 / Revised: 27 February 2020 / Accepted: 28 February 2020 / Published: 4 March 2020
(This article belongs to the Special Issue Surface Chemical Modification)
A combination of the chemical etching process in FeCl3 solution and chemical surface grafting by immersion in ethanol solution containing 1H,1H,2H,2H-perfluorodecyltriethoxysilane is a viable route to achieve a hierarchical surface topography and chemical bonding of silane molecules on an aluminium surface leading to (super)hydrophobic characteristics. Characterisation of untreated and treated aluminium surfaces was carried out using contact profilometry, optical tensiometry, scanning electron microscopy coupled with energy-dispersive spectroscopy and X-ray photoelectron spectroscopy to define the surface topography, wettability, morphology and surface composition. Additionally, the dynamic characteristics were evaluated to define bouncing and the self-cleaning effect. A thermal infrared camera was employed to evaluate anti-icing properties. The micro/nano-structured etched aluminium surface grafted with perfluoroalkyl silane film showed excellent superhydrophobicity and bounce dynamics in water droplet tests. The superhydrophobic aluminium surface exhibited the efficient self-cleaning ability of solid pollutants as well as improved anti-icing performance with melting delay. View Full-Text
Keywords: superhydrophobic surface; bounce dynamics; self-cleaning; anti-icing superhydrophobic surface; bounce dynamics; self-cleaning; anti-icing
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  • Externally hosted supplementary file 1
    Doi: 10.5281/zenodo.3664203
    Link: https://zenodo.org/deposit/3664203
    Description: Easy and fast fabrication of self-cleaning and anti-icing perfluoroalkyl silane film on aluminium Peter Rodič, Barbara Kapun, Matjaž Panjan, Ingrid Milošev Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia Appendix B: The following videos complement the data and Figures 9-11 in this article. They are available in the online version. Video appendix 2. Bouncing dynamic characterisation Video appendix 3. Water rolling off the surface Video appendix 4. Self-cleaning of solid pollutants Video appendix 5. Anti-icing properties and melting delay Video appendix 6. Ice adhesion on ground and treated aluminium
MDPI and ACS Style

Rodič, P.; Kapun, B.; Panjan, M.; Milošev, I. Easy and Fast Fabrication of Self-Cleaning and Anti-Icing Perfluoroalkyl Silane Film on Aluminium. Coatings 2020, 10, 234.

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