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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

Published online by Cambridge University Press:  28 February 2011

Christopher W. McGlinchey
Christopher W. McGlinchey*
Affiliation:
Department of Paintings Conservation, The Metropolitan Museum of Art, New York, NY
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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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 185: Symposium G – Materials Issues in Art and Archaeology II , 1990 , 93
Copyright
Copyright © Materials Research Society 1990

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