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 Portfolio 2021-07-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-021-93268-8
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author Francesca Nardelli
Francesca Martini
Judith Lee
Anna Lluvears-Tenorio
Jacopo La Nasa
Celia Duce
Bronwyn Ormsby
Marco Geppi
Ilaria Bonaduce
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
collection DOAJ
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.
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spelling doaj.art-ed10ffd9b8d648ab90370137e4650d5b2022-12-21T19:27:45ZengNature PortfolioScientific 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
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
title 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_short 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
url https://doi.org/10.1038/s41598-021-93268-8
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