The characterization of commercial artists’ alkyd paints |
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Authors: | Rebecca Ploeger Dominique Scalarone Oscar Chiantore |
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Affiliation: | aDepartment of I.P.M. Chemistry and NIS (Nanostructured Surfaces and Interfaces) Center of Excellence, University of Torino, Via Pietro Giuria, 7, 10125 Torino, Italy |
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Abstract: | There is little information in the conservation literature with respect to artists’ alkyd paints; thus, artists and conservators are somewhat at a loss about how to use and treat alkyds. Recently, analytical methods have been developed to identify the components in these polymers (oil modified polyesters), rates of cross-linking and mechanical properties. Presented in this paper are some of the characterization results of artists’ alkyd paints using THM (thermally assisted hydrolysis and methylation) gas chromatography– mass spectrometry (THM–GC/MS) and Fourier transform infrared spectroscopy–attenuated total reflectance (FTIR–ATR). Four brands of artists’ alkyd paints containing alkyd resin have been analysed; one containing a phthalic anhydride and pentaerythritol based alkyd resin, two containing isophthalic acid and pentaerythritol based alkyd resins, and the final one containing both phthalic anhydride and isophthalic acid and pentaerythritol based resins among the colours studied. |
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Keywords: | Alkyd paints Ageing Characterization Artists’ paints THM– GC/MS FTIR– ATR |
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