A non-invasive stratigraphic study by reflection FT-IR spectroscopy and UV-induced fluorescence technique: The case of historical violins

Invernizzi, Claudia; Fichera, Giusj Valentina; Licchelli, Maurizio; Malagodi, Marco

doi:10.1016/j.microc.2018.01.021

Cited by 31 publications

(32 citation statements)

References 18 publications

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“…As regards natural organic materials composing the art objects, existing mid-infrared (MIR) reflection studies are limited to their interaction, as binding media, with inorganic pigments [ 9 , 19 , 20 ] or to very specific fields of interest [ 21 ]. A valuable reflectance spectral database in the near-infrared (NIR) region has been set up [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

Mid and Near-Infrared Reflection Spectral Database of Natural Organic Materials in the Cultural Heritage Field

Invernizzi

Rovetta

Licchelli

et al. 2018

International Journal of Analytical Chemistry

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This study presents mid and near-infrared (7500-375 cm−1) total reflection mode spectra of several natural organic materials used in artworks as binding media, consolidants, adhesives, or protective coatings. A novel approach to describe and interpret reflectance bands as well as calculated absorbance after Kramers-Kronig transformation (KKT) is proposed. Transflection mode spectra have represented a valuable support both to study the distorted reflectance bands and to validate the applicability and usefulness of the KK correction. The aim of this paper is to make available to scientists and conservators a comprehensive infrared reflection spectral database, together with its detailed interpretation, as a tool for the noninvasive identification of proteins, lipids, polysaccharides, and resins by means of portable noncontact FTIR spectrometers.

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Section: Introductionmentioning

confidence: 99%

Mid and Near-Infrared Reflection Spectral Database of Natural Organic Materials in the Cultural Heritage Field

Invernizzi

Rovetta

Licchelli

et al. 2018

International Journal of Analytical Chemistry

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“…In particular, the development of non-invasive and micro-invasive analytical methods have given impetus to the instrumental detection of the materials employed in the "finishing process", consisting in coating systems made by superimposed layers of organic and inorganic materials [1,2].…”

Section: Introductionmentioning

confidence: 99%

Approaches for Detecting Madder Lake in Multi-Layered Coating Systems of Historical Bowed String Instruments

et al. 2018

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Musical instrument coatings are generally made by multi-layered systems of organic and inorganic materials, applied on the wood substrate by the violin makers during the finishing process. This coating has paramount relevance for several aspects: protection from sweat and dirt, increase of specific acoustic features, and especially aesthetic effects. In fact, the colour of historical bowed string instruments represents a very peculiar characteristic of each workshop. Among the various colourants, lakes are the most challenging to detect because of their sensibility to the alteration processes. In this work, non-invasive and micro-invasive procedures were applied to a set of mock-ups mimicking historical coatings systems prior and after artificial ageing, in order to highlight the overall information that can be recovered for the detection of madder lake in historical bowed instruments. A set of techniques, including colourimetry, visible and UV-light imaging, stereomicroscopy, Fibre Optics Diffuse Reflectance spectroscopy (FORS), X-ray Fluorescence spectroscopy (XRF), Scanning Electron Microscopy coupled with Energy-Dispersive X-ray microprobe (SEM-EDX), and Fourier-Transform Infrared spectroscopy (FTIR) were used in order to evaluate the pros and cons in the detection of organic and inorganic component of madder lake at low concentration levels.

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“…A full understanding of the complex geometry, structure and material composition of violins, resulting from the treatments described above, is still lacking. Previous studies have focused on the varnish characterisation through micro-analytical techniques [10][11][12][13][14][15], characterisation of the material components [16], and acoustics [17,18]. The techniques used to date, are superficial or micro-destructive.…”

Section: Introductionmentioning

confidence: 99%

Effect of coating systems as a barrier to humidity for lutherie woods studied by neutron radiography

Festa

Lämmlein

Senesi

et al. 2020

Journal of Cultural Heritage

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In order to understand the effect of varnishes that act as a barrier to water adsorption by wood-in terms of moisture content-in humid atmospheres, modern maple replica samples have been manufactured by a practicing luthier. They are coated with a variety of recipes thought to have been used in either the original manufacture from the 17th to 18th centuries, or in subsequent restorations. The effects of humidity were monitored via thermal neutron radiography using the NEUTRA imaging instrument at the Paul Scherrer Institute. The consequences for understanding ancient violins, and their repair or restoration are discussed.

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A non-invasive stratigraphic study by reflection FT-IR spectroscopy and UV-induced fluorescence technique: The case of historical violins

Cited by 31 publications

References 18 publications

Mid and Near-Infrared Reflection Spectral Database of Natural Organic Materials in the Cultural Heritage Field

Mid and Near-Infrared Reflection Spectral Database of Natural Organic Materials in the Cultural Heritage Field

Approaches for Detecting Madder Lake in Multi-Layered Coating Systems of Historical Bowed String Instruments

Effect of coating systems as a barrier to humidity for lutherie woods studied by neutron radiography

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