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Thermal Analysis of Fresh and Mature Oil Paint Films: The Effect of Pigments as Driers and the Solvent Leaching of Mature Paint Films

  • Christopher W. McGlinchey (a1)

Abstract

The effect of titanium white, zinc white and lead white on the drying properties of poppy, walnut and linseed oil are analyzed by differential scanning calorimetry (DSC). All of the fresh films undergo complex thermal transitions between -100 and O°C. For some of the dried films subambient transitions that resemble glass transitions occur at about -30 O°C. After exposure to certain solvents, these sub-ambient transitions disappear or are reduced significantly. It is suggested that samples with diminished sub-ambient transitions become more brittle as a result of the loss of materials that act as plasticizers.

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1 Prime, R.B., in Thermal Characterization of Polymeric Materials, edited by Turi, E.A. (Academic Press, Florida, 1981), pp. 435563.
2 Ward, I.M., Mechanical Properties of Polymeric Materials, (Wiley, Chicester, 1983), p. 171.
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5 Hall, C., Polymer Materials, (Wiley, New York, 1989), pp. 4049.
6 Solomon, D.H., The Chemistry of Organic Film Formers, (Kreiger, Florida, 1982), pp. 4049.
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11 Mecklenburg, M.F., “Some Aspects of the Mechanical Behavior of Fabric Supported Paintings”, Report to the Smithsonian Institution, 1982.

Thermal Analysis of Fresh and Mature Oil Paint Films: The Effect of Pigments as Driers and the Solvent Leaching of Mature Paint Films

  • Christopher W. McGlinchey (a1)

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