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THESE - Development of an analytical strategy for the study and preservation of painted metal objects in museum collections

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24 mai 22 - 14h Paris - Jussieu

Julie GORDON

Ligne DIFFABS, Synchrotron SOLEIL, Gif sur Yvette et Laboratoire MONARIS Sorbonne Université CNRS

This work addresses the questions surrounding the conservation of painted metal objects of technical heritage currently stored in indoor museum collections. These objects present a challenge for conservation due to their composite nature, as well as their various possible states of alteration depending on the environmental conditions experienced before entering the controlled environment of a museum facility. The first research axe of this thesis consists of the study of a corpus of historic painted metal objects dating from the 19th - early 20th century. Micro-samples were characterised using complementary and multi-scale analytical techniques to identify their original composition and state of alteration. The second research axe investigates the effect of two promising conservation treatments applied to model painted metal coupons: a corrosion inhibitor and a resin-wax mixture. Two different artificial aging conditions (relative humidity and light) were used to age the treated model coupons, and their evolution was monitored using several analytical techniques to study the visual, molecular, and structural characteristics of the system. The results obtained provide original information on the historical preparation techniques of painted metal objects, document the characteristic alteration phenomena, and present an initial experimental evaluation of the effectiveness of two conservation treatments that meet the requirements for use on historic painted metal objects.

Lien de connexion video : https://us02web.zoom.us/j/85717350192?pwd=8iSJzwtfTLKCNwuy2pOJwq1FmCwBPa.1

       Les membres du jury sont :

                   Katrien Keune                             Professor, University of Amsterdam & Rijksmuseum                    Rapportrice
                   Austin Nevin                                 Head of conservation, The Courtauld Institute of Art                    Rapporteur
                   Laura Brambilla                         Professeure HES associée, HES-SO                    Examinatrice
                   Marine Cotte                                Directrice de recherche CNRS, ESRF                    Examinatrice
                   Anne-Laure Carré                      Ingénieur de recherche Ministère de la Culture, CNAM                    Examinatrice
                   Ludovic Bellot-Gurlet              Professeur, Sorbonne Université                    Directeur de thèse
                   Solenn Réguer                            Scientifique de ligne DiffAbs, SOLEIL                    Co-encadrante