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A non-invasive screening study of varnishes applied to three paintings by Edvard Munch using portable diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS)

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  • معلومة اضافية
    • الموضوع:
      2019
    • Collection:
      Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
    • نبذة مختصرة :
      The availability and popularity of portable non-invasive instrumentation for the study of paintings has increased due to a shift away from using micro-invasive techniques. Fourier transform infrared spectroscopy (FTIR) is a successful and established technique for the characterisation of organic materials in varnish coatings and paint films. In addition, portable FTIR (pFTIR) spectrometers allow for non-invasive in situ analyses. This overcomes the disadvantages associated with micro-sampling and reproducibility issues encountered in analysis at a specific spot, as pFTIR enables examination of the whole painting. However, the practical applications and capabilities of pFTIR as a suitable screening method for the chemical characterization of varnish coatings in painting collections require systematic evaluation. This study involves a selection of three paintings from the collection of 57 works by Edvard Munch belonging to The National Museum of Art in Norway. Its focus is the identification of the non-original varnish types that were applied by the museum. Between 1909 and 1993, the Museum was embroiled in a varnish controversy due to their application of, first natural and then synthetic, varnish coatings to 48 of these Munch paintings. A series of public debates arose about the Museum’s varnishing practice, which ran counter to the artist’s usual custom of leaving paint surfaces unvarnished (or occasional locally varnished). The three paintings were screened using a pFTIR spectrometer. Different regions of the varnished and unvarnished painted surfaces were analysed with Portable Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS). These paintings date from 1887 to 1891 and are documented as having been treated at the Museum with one of the following types of natural or low-molecular-weight synthetic varnish coatings: dammar, mastic, polycyclohexanone (Laropal K 80 from BASF) and reduced or hydrogenated cyclohexanone-co-methyl-cyclohexanone (MS2A from Howards of Ilford). Surface microscopy and ...
    • Relation:
      http://urn.nb.no/URN:NBN:no-73840; Heritage Science. 2019 Oct 22;7(1):84; http://hdl.handle.net/10852/70711; https://doi.org/10.1186/s40494-019-0327-1; URN:NBN:no-73840; Fulltext https://www.duo.uio.no/bitstream/handle/10852/70711/1/40494_2019_Article_327.pdf
    • الرقم المعرف:
      10.1186/s40494-019-0327-1
    • الدخول الالكتروني :
      http://hdl.handle.net/10852/70711
      http://urn.nb.no/URN:NBN:no-73840
      https://doi.org/10.1186/s40494-019-0327-1
    • Rights:
      The Author(s); licensee Springer International Publishing Ltd. ; Attribution 4.0 International ; http://creativecommons.org/licenses/by/4.0/
    • الرقم المعرف:
      edsbas.4C71964