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4 results on '"Emilande Apchain"'

1. X‐ray photoelectron spectroscopy characterization of Cu compounds for the development of organic protection treatments dedicated to heritage Cu objects preservation

Author

Muriel Bouttemy, Arnaud Etcheberry, Florence Mercier-Bion, Emilande Apchain, Philippe Dillmann, Maëva L’héronde, Delphine Neff, Laboratoire Archéomatériaux et Prévision de l'Altération (LAPA - UMR 3685), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut Lavoisier de Versailles (ILV), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut photonique d'analyse non-destructive européen des matériaux anciens (IPANEMA), Muséum national d'Histoire naturelle (MNHN)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), IRAMAT - Laboratoire Métallurgies et Cultures (IRAMAT - LMC), Institut de Recherches sur les Archéomatériaux (IRAMAT), Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS), Fondation des Sciences du Patrimoine, Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut Rayonnement Matière de Saclay (IRAMIS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)

Subjects
010302 applied physics, Cuprite, Materials science, [CHIM.MATE]Chemical Sciences/Material chemistry, 02 engineering and technology, Surfaces and Interfaces, General Chemistry, engineering.material, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Surfaces, Coatings and Films, Characterization (materials science), X-ray photoelectron spectroscopy, 13. Climate action, visual_art, 0103 physical sciences, Materials Chemistry, engineering, visual_art.visual_art_medium, Brochantite, 0210 nano-technology, Nuclear chemistry
Abstract

International audience; The preservation of bronze and copper heritage objects is challenging. Exposure to water or pollution in outdoor conditions leads to corrosion phenomena, which can highly degrade the objects or structures. We aim to develop an alternative nontoxic corrosion inhibiting treatment, based on the use of a carboxylate (HC10) treatment. Electron spectroscopies (X‐ray photoelectron spectroscopy and scanning Auger microscopy) are used to determine, from micrometric to nanometric scale, the composition and chemical environments (oxidation degrees) of the copper compounds commonly found in the corrosion product layer. In the present study, we focus on the evaluation of X‐ray beam irradiation damage when performing surface analysis on cuprite, brochantite, and Cu decanoate reference samples. The reduction phenomenon has already been reported, especially for Cu(II) compounds, but not clearly explained. Different behavior has been observed depending on the X‐ray source used, and the nature and hydration level of the compounds. The photoreduction issue is critical, as it guarantees the reliability of the chemical information obtained and sheds light on the best analysis pathway to adopt when multitechnique analyses are implemented. An analytical procedure is employed to track the reduction of Cu(II) reference samples during XPS analysis evidencing practically instantaneous modifications of the spectra and thus, the instability of these phases except for the dehydrated cuprite sample.

Published
2020
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2. Efficiency and durability of protective treatments on cultural heritage copper corrosion layers

Author

Emilande Apchain, Philippe Dillmann, Albert Noumowe, Jean-Paul Gallien, Pascal Berger, Nicolas Nuns, Delphine Neff, Laboratoire Archéomatériaux et Prévision de l'Altération (LAPA - UMR 3685), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les Archéomatériaux (IRAMAT), Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de mécanique et matériaux du génie civil (L2MGC), Fédération INSTITUT DES MATÉRIAUX DE CERGY-PONTOISE (I-MAT), CY Cergy Paris Université (CY)-CY Cergy Paris Université (CY), Institut Michel Eugène Chevreul - FR 2638 (IMEC), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire d'Etudes des Eléments Légers (LEEL - UMR 3685), Fondation des Sciences du Patrimoine ne (EUR-17-EURE-0021), ANR-10-LABX-0094,PATRIMA,Tangible heritage(2010), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université Bordeaux Montaigne-Université de Technologie de Belfort-Montbeliard (UTBM), and Université d'Artois (UA)-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centrale Lille Institut (CLIL)

Subjects
Materials science, 020209 energy, General Chemical Engineering, chemistry.chemical_element, 02 engineering and technology, Corrosion, 0202 electrical engineering, electronic engineering, information engineering, General Materials Science, protective treatments, copper alloys, microcrystalline wax, Microcrystalline wax, Wax, atmospheric corrosion, Metallurgy, General Chemistry, Penetration (firestop), [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Durability, Copper, 6. Clean water, chemistry, visual_art, copper, visual_art.visual_art_medium, decanoate solution, Leaching (metallurgy), Erosion corrosion of copper water tubes, 0210 nano-technology
Abstract

International audience; To protect copper artefacts of the cultural heritage from atmospheric degradation protective treatment must be applied. Two types of protective treatments: microcrystalline wax (Cosmolloïd wax) and decanoate solution (HC10) were tested. Two aspects were considered: the penetration of the treatments in the corrosion layers, and its durability. Equivalent efficiencies for both treatments were demonstrated. The penetration of the treatments seems to depend essentially on its application mode. Re-corrosion experiments of treated samples under immersion in D2O demonstrate that the efficiency and the durability with time or after water leaching depend on the penetration of the treatments in the corrosion layers.

Published
2021
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3. Conservation of plasticized PVC artifacts in museums: Influence of wrapping materials

Author

Emilande Apchain, Adeline Royaux, Isabelle Fabre-Francke, Gilles Barabant, Bertrand Lavédrine, Nathalie Balcar, Clémentine Bollard, Sophie Cantin, Odile Fichet, CY Cergy Paris Université (CY), Laboratoire de Physico-chimie des Polymères et des Interfaces (LPPI), Fédération INSTITUT DES MATÉRIAUX DE CERGY-PONTOISE (I-MAT), Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine, Centre de recherche et de restauration des musées de France (C2RMF), Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture et de la Communication (MCC), Centre de Recherche sur la Conservation (CRC ), Muséum national d'Histoire naturelle (MNHN)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS), Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS), and Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture et de la Communication (MCC)

Subjects
Archeology, Materials science, Materials Science (miscellaneous), 010401 analytical chemistry, Plasticizer, 02 engineering and technology, Conservation, 021001 nanoscience & nanotechnology, 01 natural sciences, Artificial aging, [SHS]Humanities and Social Sciences, 0104 chemical sciences, Low-density polyethylene, SILK, Chemistry (miscellaneous), Color changes, [CHIM]Chemical Sciences, Relative humidity, Composite material, 0210 nano-technology, General Economics, Econometrics and Finance, Spectroscopy, ComputingMilieux_MISCELLANEOUS
Abstract

The effects of LDPE and PET in contact with heritage object made in PVC were studied and compared with silk paper during an artificial aging consisting in a temperature cycle and under controlled relative humidity. Color changes, morphological changes of the surface, plasticizers loss and surfaces properties were assessed over aging time. More pronounced color changes than for the references (without contact material and with silk paper) are observed for both contact materials but are more significant for PET whose surface has brown spots from three months of aging. The plasticizers cross LDPE from the outset of the aging but zein (protein additive) is evidenced only on the side in contact with the PVC. The PVC sample in contact with PET shows phtalic acid from DOP degradation but it remains on the PVC surface.

Published
2020
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4. Multiscale Study of Interactions Between Corrosion Products Layer Formed on Heritage Cu Objects and Organic Protection Treatments

Author

Delphine Neff, Arnaud Etcheberry, Maëva L’héronde, Florence Mercier-Bion, Muriel Bouttemy, Philippe Dillmann, Emilande Apchain, Laboratoire Archéomatériaux et Prévision de l'Altération (LAPA - UMR 3685), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les Archéomatériaux (IRAMAT), Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS), Institut Lavoisier de Versailles (ILV), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), IRAMAT - Laboratoire Métallurgies et Cultures (IRAMAT - LMC), Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS), Fondation des Sciences du Patrimoine, Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS), and Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Archeology, Cuprite, corrosion inhibitor, Materials science, 020209 energy, Materials Science (miscellaneous), chemistry.chemical_element, 02 engineering and technology, Conservation, engineering.material, Corrosion, Metal, Corrosion inhibitor, chemistry.chemical_compound, 0202 electrical engineering, electronic engineering, information engineering, Brochantite, lcsh:CC1-960, Penetration depth, carboxylate treatment, corrosion, [CHIM.MATE]Chemical Sciences/Material chemistry, cultural heritage, 021001 nanoscience & nanotechnology, Copper, 6. Clean water, Auger spectroscopy, chemistry, Chemical engineering, visual_art, copper, visual_art.visual_art_medium, engineering, lcsh:Archaeology, Nanometre, 0210 nano-technology
Abstract

In the framework of the protection of copper objects exposed to atmospheric corrosion, different solutions are envisaged, among them carboxylate treatments (HC10). In this study, an analytical approach based on complementary techniques from micrometer to nanometer scale (&mu, RS, SEM-EDS, SAM) is used to describe the properties of the corrosion products layer (CPL) and determine the penetration depth of the HC10 protection treatment inside the CPL of copper samples issued from the roof of the Saint Martin church in Metz. The CPL consists in a thick brochantite layer (20 to 50 &mu, m), mainly composed of Cu4SO4(OH)6, on top of a thinner (1 to 5 &mu, m thick) cuprite layer, Cu2O, acting as a natural corrosion barrier on the metal. Application of the organic treatment is implemented by immersing the corroded samples in HC10 solution, consistent with future requirements for large scale applications. Even for short-term duration (one minute), the HC10 treatment penetrates to the cuprite/brochantite interface, but Cu(C10)2 precipitate is only detected locally, whereas for a longer immersion of thirty minutes, it is present in higher proportions in the whole brochantite layer, filling the pores, up to the cuprite/brochantite interface. Cu(C10)2 acts as a second inner barrier and prevents liquid infiltration.

Published
2019
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