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Amphiphobic Nanostructured Coatings for Industrial Applications

The search for surfaces with non-wetting behavior towards water and low-surface tension liquids affects a wide range of industries. Surface wetting is regulated by morphological and chemical features interacting with liquid phases under different ambient conditions. Most of the approaches to the fab...

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Detalles Bibliográficos
Autores principales: Veronesi, Federico, Boveri, Giulio, Raimondo, Mariarosa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427180/
https://www.ncbi.nlm.nih.gov/pubmed/30866464
http://dx.doi.org/10.3390/ma12050787
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author Veronesi, Federico
Boveri, Giulio
Raimondo, Mariarosa
author_facet Veronesi, Federico
Boveri, Giulio
Raimondo, Mariarosa
author_sort Veronesi, Federico
collection PubMed
description The search for surfaces with non-wetting behavior towards water and low-surface tension liquids affects a wide range of industries. Surface wetting is regulated by morphological and chemical features interacting with liquid phases under different ambient conditions. Most of the approaches to the fabrication of liquid-repellent surfaces are inspired by living organisms and require the fabrication of hierarchically organized structures, coupled with low surface energy chemical composition. This paper deals with the design of amphiphobic metals (AM) and alloys by deposition of nano-oxides suspensions in alcoholic or aqueous media, coupled with perfluorinated compounds and optional infused lubricant liquids resulting in, respectively, solid–liquid–air and solid–liquid–liquid working interfaces. Nanostructured organic/inorganic hybrid coatings with contact angles against water above 170°, contact angle with n-hexadecane (surface tension γ = 27 mN/m at 20 °C) in the 140–150° range and contact angle hysteresis lower than 5° have been produced. A full characterization of surface chemistry has been undertaken by X-ray photoelectron spectroscopy (XPS) analyses, while field-emission scanning electron microscope (FE-SEM) observations allowed the estimation of coatings thicknesses (300–400 nm) and their morphological features. The durability of fabricated amphiphobic surfaces was also assessed with a wide range of tests that showed their remarkable resistance to chemically aggressive environments, mechanical stresses and ultraviolet (UV) radiation. Moreover, this work analyzes the behavior of amphiphobic surfaces in terms of anti-soiling, snow-repellent and friction-reduction properties—all originated from their non-wetting behavior. The achieved results make AM materials viable solutions to be applied in different sectors answering several and pressing technical needs.
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spelling pubmed-64271802019-04-15 Amphiphobic Nanostructured Coatings for Industrial Applications Veronesi, Federico Boveri, Giulio Raimondo, Mariarosa Materials (Basel) Article The search for surfaces with non-wetting behavior towards water and low-surface tension liquids affects a wide range of industries. Surface wetting is regulated by morphological and chemical features interacting with liquid phases under different ambient conditions. Most of the approaches to the fabrication of liquid-repellent surfaces are inspired by living organisms and require the fabrication of hierarchically organized structures, coupled with low surface energy chemical composition. This paper deals with the design of amphiphobic metals (AM) and alloys by deposition of nano-oxides suspensions in alcoholic or aqueous media, coupled with perfluorinated compounds and optional infused lubricant liquids resulting in, respectively, solid–liquid–air and solid–liquid–liquid working interfaces. Nanostructured organic/inorganic hybrid coatings with contact angles against water above 170°, contact angle with n-hexadecane (surface tension γ = 27 mN/m at 20 °C) in the 140–150° range and contact angle hysteresis lower than 5° have been produced. A full characterization of surface chemistry has been undertaken by X-ray photoelectron spectroscopy (XPS) analyses, while field-emission scanning electron microscope (FE-SEM) observations allowed the estimation of coatings thicknesses (300–400 nm) and their morphological features. The durability of fabricated amphiphobic surfaces was also assessed with a wide range of tests that showed their remarkable resistance to chemically aggressive environments, mechanical stresses and ultraviolet (UV) radiation. Moreover, this work analyzes the behavior of amphiphobic surfaces in terms of anti-soiling, snow-repellent and friction-reduction properties—all originated from their non-wetting behavior. The achieved results make AM materials viable solutions to be applied in different sectors answering several and pressing technical needs. MDPI 2019-03-07 /pmc/articles/PMC6427180/ /pubmed/30866464 http://dx.doi.org/10.3390/ma12050787 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Veronesi, Federico
Boveri, Giulio
Raimondo, Mariarosa
Amphiphobic Nanostructured Coatings for Industrial Applications
title Amphiphobic Nanostructured Coatings for Industrial Applications
title_full Amphiphobic Nanostructured Coatings for Industrial Applications
title_fullStr Amphiphobic Nanostructured Coatings for Industrial Applications
title_full_unstemmed Amphiphobic Nanostructured Coatings for Industrial Applications
title_short Amphiphobic Nanostructured Coatings for Industrial Applications
title_sort amphiphobic nanostructured coatings for industrial applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427180/
https://www.ncbi.nlm.nih.gov/pubmed/30866464
http://dx.doi.org/10.3390/ma12050787
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