White zinc in linseed oil paintings: chemical, mechanical and aesthetic aspects

Authors

  • Andrea Macchia <p>YOuth in COnservayion of CUltural Heritage International Association</p> <p>University of Rome "La Sapienza"</p>
  • Stella Nunziante Cesaro <p>&nbsp;SMATCH Scientific Metodologies Applied to Cultural Heritage</p>
  • Yeghis Keheyan <p>University of Rome `La Sapienza`</p>
  • Mauro Francesco La Russa <p><span>University of Calabria</span><span>&nbsp; -&nbsp;</span>&nbsp;Via Pietro Bucci, 87036 Arcavacata di Rende, Italy</p>
  • Silvestro Antonio Ruffolo <p>University of Calabria&nbsp; -&nbsp;&nbsp;Via Pietro Bucci, 87036 Arcavacata di Rende, Italy</p>

DOI:

https://doi.org/10.2451/2015PM0027

Keywords:

White of zinc, craquelure, oil painting, commercial pigments, analytic investigations

Abstract

The interest of this research derived from the request for a scientific investigation of the observed phenomenon from by few contemporary artists who, in some occasions, observed the formation of crequalure in rethinking areas where a paint layer of different colour was over imposed to a zinc white layer, on commercial canvases. To investigate this phenomenon several investigations to characterized chemical and physical proprieties of commercial white zinc pigments are carried out: XRD, ICP/OES, SEM/EDS, FTIR, GC-MS. Moreover, to several tests were performed in order to evidence the different behavior of the various white pigments referring to the miscibility and to the drying times. The paper shows how the size of the pigment particles affects the formation and the type of the craquelure.

Author Biographies

Andrea Macchia, <p>YOuth in COnservayion of CUltural Heritage International Association</p> <p>University of Rome "La Sapienza"</p>

President

Dept. of Chemistry

Stella Nunziante Cesaro, <p>&nbsp;SMATCH Scientific Metodologies Applied to Cultural Heritage</p>

President SMATCH Italy

Yeghis Keheyan, <p>University of Rome `La Sapienza`</p>

Dept. Chemistry

Mauro Francesco La Russa, <p><span>University of Calabria</span><span>&nbsp; -&nbsp;</span>&nbsp;Via Pietro Bucci, 87036 Arcavacata di Rende, Italy</p>

DiBEST Department of Biology, Ecology and Earth Sciences

Silvestro Antonio Ruffolo, <p>University of Calabria&nbsp; -&nbsp;&nbsp;Via Pietro Bucci, 87036 Arcavacata di Rende, Italy</p>

DiBEST Department of Biology, Ecology and Earth Sciences

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Published

2015-07-08