Influence of TiO2 pigment particles on chromate ion transport in epoxy films

Abstract Transport of active species (i.e., ions) leaching from pigment particles incorporated in a polymer matrix is the main mechanism behind the anticorrosive performance of protective coatings. Understanding this mechanism is necessary for the effective design of the systems utilizing pigments l...

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Autores principales:	Małgorzata Kopeć, Brenda D. Rossenaar, Kees van Leerdam, Arne Janssen, Antony N. Davies, Stuart B. Lyon, Peter Visser, Simon R. Gibbon
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/33b2b4efbfa346a491879e4814beb187
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spelling	oai:doaj.org-article:33b2b4efbfa346a491879e4814beb1872021-12-02T18:01:29ZInfluence of TiO2 pigment particles on chromate ion transport in epoxy films10.1038/s41529-021-00156-72397-2106https://doaj.org/article/33b2b4efbfa346a491879e4814beb1872021-03-01T00:00:00Zhttps://doi.org/10.1038/s41529-021-00156-7https://doaj.org/toc/2397-2106Abstract Transport of active species (i.e., ions) leaching from pigment particles incorporated in a polymer matrix is the main mechanism behind the anticorrosive performance of protective coatings. Understanding this mechanism is necessary for the effective design of the systems utilizing pigments less toxic than the most efficient chromate salts. It was demonstrated that anticorrosive pigment particles can themselves facilitate the transport of active species via the pathways formed after pigment leaching from a coating. It was also suggested that other paint components, e.g., certain additives, pigments, and fillers can be involved in the formation of transport pathways. Investigation of the possible influence of inert pigment (TiO2) on creating the pathways for chromate ion transport in polymer coatings was the primary objective of this work. In an experiment mimicking the transport of pigment species (i.e., chromate ions), a model epoxy coating containing particles of a single pigment (TiO2) was exposed to a chromate solution (aqueous, or with the addition of acetone as a polymer swelling agent). It was shown that the chromate ions can be transported in the epoxy film preferentially via the TiO2 particles/polymer matrix interface.Małgorzata KopećBrenda D. RossenaarKees van LeerdamArne JanssenAntony N. DaviesStuart B. LyonPeter VisserSimon R. GibbonNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ENnpj Materials Degradation, Vol 5, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Małgorzata Kopeć Brenda D. Rossenaar Kees van Leerdam Arne Janssen Antony N. Davies Stuart B. Lyon Peter Visser Simon R. Gibbon Influence of TiO2 pigment particles on chromate ion transport in epoxy films
description	Abstract Transport of active species (i.e., ions) leaching from pigment particles incorporated in a polymer matrix is the main mechanism behind the anticorrosive performance of protective coatings. Understanding this mechanism is necessary for the effective design of the systems utilizing pigments less toxic than the most efficient chromate salts. It was demonstrated that anticorrosive pigment particles can themselves facilitate the transport of active species via the pathways formed after pigment leaching from a coating. It was also suggested that other paint components, e.g., certain additives, pigments, and fillers can be involved in the formation of transport pathways. Investigation of the possible influence of inert pigment (TiO2) on creating the pathways for chromate ion transport in polymer coatings was the primary objective of this work. In an experiment mimicking the transport of pigment species (i.e., chromate ions), a model epoxy coating containing particles of a single pigment (TiO2) was exposed to a chromate solution (aqueous, or with the addition of acetone as a polymer swelling agent). It was shown that the chromate ions can be transported in the epoxy film preferentially via the TiO2 particles/polymer matrix interface.
format	article
author	Małgorzata Kopeć Brenda D. Rossenaar Kees van Leerdam Arne Janssen Antony N. Davies Stuart B. Lyon Peter Visser Simon R. Gibbon
author_facet	Małgorzata Kopeć Brenda D. Rossenaar Kees van Leerdam Arne Janssen Antony N. Davies Stuart B. Lyon Peter Visser Simon R. Gibbon
author_sort	Małgorzata Kopeć
title	Influence of TiO2 pigment particles on chromate ion transport in epoxy films
title_short	Influence of TiO2 pigment particles on chromate ion transport in epoxy films
title_full	Influence of TiO2 pigment particles on chromate ion transport in epoxy films
title_fullStr	Influence of TiO2 pigment particles on chromate ion transport in epoxy films
title_full_unstemmed	Influence of TiO2 pigment particles on chromate ion transport in epoxy films
title_sort	influence of tio2 pigment particles on chromate ion transport in epoxy films
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/33b2b4efbfa346a491879e4814beb187
work_keys_str_mv	AT małgorzatakopec influenceoftio2pigmentparticlesonchromateiontransportinepoxyfilms AT brendadrossenaar influenceoftio2pigmentparticlesonchromateiontransportinepoxyfilms AT keesvanleerdam influenceoftio2pigmentparticlesonchromateiontransportinepoxyfilms AT arnejanssen influenceoftio2pigmentparticlesonchromateiontransportinepoxyfilms AT antonyndavies influenceoftio2pigmentparticlesonchromateiontransportinepoxyfilms AT stuartblyon influenceoftio2pigmentparticlesonchromateiontransportinepoxyfilms AT petervisser influenceoftio2pigmentparticlesonchromateiontransportinepoxyfilms AT simonrgibbon influenceoftio2pigmentparticlesonchromateiontransportinepoxyfilms
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Influence of TiO2 pigment particles on chromate ion transport in epoxy films

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