The stability of paintings and the molecular structure of the oil paint polymeric network

Abstract A molecular-level understanding of the structure of the polymeric network formed upon the curing of air-drying artists’ oil paints still represents a challenge. In this study we used a set of analytical methodologies classically employed for the characterisation of a paint film—based on inf...

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Main Authors:	Francesca Nardelli, Francesca Martini, Judith Lee, Anna Lluvears-Tenorio, Jacopo La Nasa, Celia Duce, Bronwyn Ormsby, Marco Geppi, Ilaria Bonaduce
Format:	Article
Language:	English
Published:	Nature Publishing Group 2021-07-01
Series:	Scientific Reports
Online Access:	https://doi.org/10.1038/s41598-021-93268-8

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spelling	doaj-ed10ffd9b8d648ab90370137e4650d5b2021-07-11T11:29:44ZengNature Publishing GroupScientific Reports2045-23222021-07-0111111310.1038/s41598-021-93268-8The stability of paintings and the molecular structure of the oil paint polymeric networkFrancesca Nardelli0Francesca Martini1Judith Lee2Anna Lluvears-Tenorio3Jacopo La Nasa4Celia Duce5Bronwyn Ormsby6Marco Geppi7Ilaria Bonaduce8Department of Chemistry and Industrial Chemistry, University of PisaDepartment of Chemistry and Industrial Chemistry, University of PisaConservation Department, Tate, MillbankDepartment of Chemistry and Industrial Chemistry, University of PisaDepartment of Chemistry and Industrial Chemistry, University of PisaDepartment of Chemistry and Industrial Chemistry, University of PisaConservation Department, Tate, MillbankDepartment of Chemistry and Industrial Chemistry, University of PisaDepartment of Chemistry and Industrial Chemistry, University of PisaAbstract A molecular-level understanding of the structure of the polymeric network formed upon the curing of air-drying artists’ oil paints still represents a challenge. In this study we used a set of analytical methodologies classically employed for the characterisation of a paint film—based on infrared spectroscopy and mass spectrometry—in combination with solid state NMR (SSNMR), to characterise model paint layers which present different behaviours towards surface cleaning with water, a commonly applied procedure in art conservation. The study demonstrates, with the fundamental contribution of SSNMR, a relationship between the painting stability and the chemical structure of the polymeric network. In particular, it is demonstrated for the first time that a low degree of cross-linking in combination with a high degree of oxidation of the polymeric network render the oil paint layer sensitive to water.https://doi.org/10.1038/s41598-021-93268-8
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Francesca Nardelli Francesca Martini Judith Lee Anna Lluvears-Tenorio Jacopo La Nasa Celia Duce Bronwyn Ormsby Marco Geppi Ilaria Bonaduce
spellingShingle	Francesca Nardelli Francesca Martini Judith Lee Anna Lluvears-Tenorio Jacopo La Nasa Celia Duce Bronwyn Ormsby Marco Geppi Ilaria Bonaduce The stability of paintings and the molecular structure of the oil paint polymeric network Scientific Reports
author_facet	Francesca Nardelli Francesca Martini Judith Lee Anna Lluvears-Tenorio Jacopo La Nasa Celia Duce Bronwyn Ormsby Marco Geppi Ilaria Bonaduce
author_sort	Francesca Nardelli
title	The stability of paintings and the molecular structure of the oil paint polymeric network
title_short	The stability of paintings and the molecular structure of the oil paint polymeric network
title_full	The stability of paintings and the molecular structure of the oil paint polymeric network
title_fullStr	The stability of paintings and the molecular structure of the oil paint polymeric network
title_full_unstemmed	The stability of paintings and the molecular structure of the oil paint polymeric network
title_sort	stability of paintings and the molecular structure of the oil paint polymeric network
publisher	Nature Publishing Group
series	Scientific Reports
issn	2045-2322
publishDate	2021-07-01
description	Abstract A molecular-level understanding of the structure of the polymeric network formed upon the curing of air-drying artists’ oil paints still represents a challenge. In this study we used a set of analytical methodologies classically employed for the characterisation of a paint film—based on infrared spectroscopy and mass spectrometry—in combination with solid state NMR (SSNMR), to characterise model paint layers which present different behaviours towards surface cleaning with water, a commonly applied procedure in art conservation. The study demonstrates, with the fundamental contribution of SSNMR, a relationship between the painting stability and the chemical structure of the polymeric network. In particular, it is demonstrated for the first time that a low degree of cross-linking in combination with a high degree of oxidation of the polymeric network render the oil paint layer sensitive to water.
url	https://doi.org/10.1038/s41598-021-93268-8
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The stability of paintings and the molecular structure of the oil paint polymeric network

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