Pigment and Binder Concentrations in Modern Paint Samples Determined by IR and Raman Spectroscopy

Knowledge of the techniques employed by artists, such as the composition of the paints, colour palette, and painting style, is of crucial importance not only to attribute works of art to the workshop or artist but also to develop strategies and measures for the conservation and restoration of the ar...

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Published inAngewandte Chemie Vol. 130; no. 25; pp. 7523 - 7529
Main Authors Wiesinger, Rita, Pagnin, Laura, Anghelone, Marta, Moretto, Ligia M., Orsega, Emilio F., Schreiner, Manfred
Format Journal Article
LanguageEnglish
Published Weinheim Wiley Subscription Services, Inc 18.06.2018
Subjects
Acryl- und Alkydbindemittel
Anorganische Pigmente
Art works
Artists
Binders
Calibration
Chemistry
Composition
FTIR-Spektroskopie
Infrared spectroscopy
Lead poisoning
Moderne Farben
Paints
Pigments
Quantitative analysis
Raman spectroscopy
Raman-Spektroskopie
Restoration
Spectroscopy
Spectrum analysis
Tubes
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Summary:Knowledge of the techniques employed by artists, such as the composition of the paints, colour palette, and painting style, is of crucial importance not only to attribute works of art to the workshop or artist but also to develop strategies and measures for the conservation and restoration of the art. While much research has been devoted to investigating the composition of an artist's materials from a qualitative point of view, little effort has been made in terms of quantitative analyses. This study aims to quantify the relative concentrations of binders (acrylic and alkyd) and inorganic pigments in different paint samples by IR and Raman spectroscopies. To perform this quantitative evaluation, reference samples of known concentrations were prepared to obtain calibration plots. In a further step, the quantification method was verified by additional test samples and commercially available paint tubes. The results obtained confirm that the quantitative method developed for IR and Raman spectroscopy is able to efficiently determine different pigment and binder concentrations of paint samples with high accuracy. IR‐ und Raman‐Spektroskopie wurden zur Quantifizierung der relativen Konzentrationen von Pigmenten und Bindemitteln in modernen Farbproben verwendet. Die untersuchten Materialien waren Acryl‐ und Alkydbindemittel, nämlich Plextol D498 und Alkyd Medium 4, in einer Mischung mit drei verschiedenen anorganischen Pigmenten: künstlichem Ultramarineblau, hydratisiertem Chromoxidgrün und Cadmiumgelb.
Bibliography:These authors contributed equally to this work.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201713413