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Issue 96, 2016
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Ionomer-like structure in mature oil paint binding media

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Abstract

Infrared spectra of samples from oil paintings often show metal carboxylate bands that are broader and shifted compared to those of crystalline metal soap standards (metal complexes of long-chain saturated fatty acids). Using quantitative attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), it is demonstrated that the broad metal carboxylate band is typically too intense to be explained by carboxylates adsorbed on the surface of pigment particles or disordered metal complexes of saturated fatty acids. The metal carboxylate species associated with the broad bands must therefore be an integral part of the polymerized binding medium. Small-angle X-ray scattering (SAXS) measurements on model ionomer systems based on linseed oil revealed that the medium contains ionic clusters similar to more classical ionomers. These structural similarities are very helpful in understanding the chemistry of mature oil paint binding media and the potential degradation mechanisms that affect oil paintings.

Graphical abstract: Ionomer-like structure in mature oil paint binding media

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Publication details

The article was received on 18 Jul 2016, accepted on 25 Sep 2016 and first published on 26 Sep 2016


Article type: Paper
DOI: 10.1039/C6RA18267D
RSC Adv., 2016,6, 93363-93369
  • Open access: Creative Commons BY license
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    Ionomer-like structure in mature oil paint binding media

    J. J. Hermans, K. Keune, A. van Loon, R. W. Corkery and P. D. Iedema, RSC Adv., 2016, 6, 93363
    DOI: 10.1039/C6RA18267D

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