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Diving into micro- and macroscopic properties of egg-tempera paint based on Sienna pigment
Abstract Egg-tempera painting was a pictorial technique widespread in the Middle Ages. In this work, Sienna earth and yolk have been used to formulate tempera paints according to historical recipes. Micro- and macroscopic properties were investigated to understand the interactions between the pigment and the binder. The pigment, inorganic part of the paint, was characterized by X-Ray Diffraction (XRD), thermal analysis (TG-DTA), Fourier Transform Infrared (FT-IR) Spectroscopy, granulometry, as well as Scanning Electron Microscopy (SEM). Then lecithin adsorption onto pigment particles was probed to understand yolk interaction with Sienna earth, pure kaolinite and goethite particles. NMR-Relaxometry was used to investigate the behavior and accessibility of the mineral surfaces to yolk and water. Macroscopic rheological properties of the paint systems were finally investigated.
Graphical abstract Display Omitted
Highlights Sienna earth and yolk have been used to formulate tempera paints according to historical recipes. Relaxation rates measured on the different minerals in water pointed out that Sienna is a complex microstructure. Rheological properties were investigated on different formulations of paints.
Diving into micro- and macroscopic properties of egg-tempera paint based on Sienna pigment
Abstract Egg-tempera painting was a pictorial technique widespread in the Middle Ages. In this work, Sienna earth and yolk have been used to formulate tempera paints according to historical recipes. Micro- and macroscopic properties were investigated to understand the interactions between the pigment and the binder. The pigment, inorganic part of the paint, was characterized by X-Ray Diffraction (XRD), thermal analysis (TG-DTA), Fourier Transform Infrared (FT-IR) Spectroscopy, granulometry, as well as Scanning Electron Microscopy (SEM). Then lecithin adsorption onto pigment particles was probed to understand yolk interaction with Sienna earth, pure kaolinite and goethite particles. NMR-Relaxometry was used to investigate the behavior and accessibility of the mineral surfaces to yolk and water. Macroscopic rheological properties of the paint systems were finally investigated.
Graphical abstract Display Omitted
Highlights Sienna earth and yolk have been used to formulate tempera paints according to historical recipes. Relaxation rates measured on the different minerals in water pointed out that Sienna is a complex microstructure. Rheological properties were investigated on different formulations of paints.
Diving into micro- and macroscopic properties of egg-tempera paint based on Sienna pigment
Gerony, Floriane (author) / de Viguerie, Laurence (author) / du Boullay, Côme Thillaye (author) / Gaslain, Fabrice (author) / Lanson, Bruno (author) / Colin, Camille (author) / Michot, Laurent (author) / Rollet, Anne-Laure (author) / Mériguet, Guillaume (author) / Jaber, Maguy (author)
Applied Clay Science ; 249
2023-12-15
Article (Journal)
Electronic Resource
English
Tempera paint , Sienna earth , Yolk , Lecithin , Relaxometry , Rheology
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