Characterization of materials used in the execution of historic oil paintings by XRD, SEM-EDS, TGA and LIBS analysis

In this study, material characteristics of historic oil paintings in a 19th century church in Ayvalik/Turkey were investigated to propose the treatments to be used in their conservation and protection. For this purpose, physical, chemical and mineralogical compositions and the microstructure of the paintings were determined by X-ray Diffraction, Scanning Electron Microscope, Thermo Gravimetric Analyzer, Differential Scanning Calorimeter, Infrared Spectroscopy and Laser Induced Breakdown Spectroscopy. Analysis results showed that the paintings were composed of very thin binding and white priming layers on which the pigments were applied. Binding layers were composed of polymerized vegetable oil with Zinc Oxide. Priming layers were composed of anglesite mineral in polymerized vegetable oil. Pigments used in paintings were mainly green earth, red chrome and iron oxide.

[1]  Demetrios Anglos,et al.  Pigment analysis in Bronze Age Aegean and Eastern Mediterranean painted plaster by laser-induced breakdown spectroscopy (LIBS) , 2006 .

[2]  Caroline Babington,et al.  The Conservation of Wall Paintings , 1993 .

[3]  Demetrios Anglos,et al.  Laser Diagnostics of Painted Artworks: Laser-Induced Breakdown Spectroscopy in Pigment Identification , 1997 .

[4]  E. Castellucci,et al.  Micro-Raman spectroscopy for standard and in situ characterisation of painting materials , 2000 .

[5]  A. Doménech‐Carbó,et al.  Identification of lipid binders in paintings by gas chromatography. Influence of the pigments. , 2001, Journal of chromatography. A.

[6]  Robin J. H. Clark,et al.  Pigment identification by spectroscopic means: an arts/science interface , 2002 .

[7]  Simona Margutti,et al.  Calorimetric Analysis of the Polymerisation Process of Linseed Oil , 2001 .

[8]  J. D. J. van den Berg,et al.  Analytical chemical studies on traditional linseed oil paints , 2002 .

[9]  J. Weerd,et al.  Microspectroscopic analysis of traditional oil paint , 2002 .

[10]  I. Surowiec,et al.  Analysis of drying oils used as binding media for objects of art by capillary electrophoresis with indirect UV and conductivity detection. , 2004, Journal of chromatography. A.

[11]  Robin J. H. Clark,et al.  Raman spectroscopic library of natural and synthetic pigments (pre- ≈ 1850 AD) , 1997 .

[12]  Christopher J. Brooke,et al.  Fourier Transform Raman Spectroscopic Study of Pigments from English Mediaeval Wall Paintings , 1997 .

[13]  P. L. Lang,et al.  The infrared microspectroscopic and energy dispersive X-ray analysis of paints removed from a painted, medieval sculpture of Saint Wolfgang , 2003 .

[14]  Silvia Prati,et al.  DSC Application in the Conservation Field , 2001 .

[15]  Demetrios Anglos,et al.  Laser-Induced Breakdown Spectroscopy in Art and Archaeology , 2001 .

[16]  J. Barnett,et al.  Colour and art : A brief history of pigments , 2006 .