TG-DTA
and FTIR analyses of plasters from byzantine monuments in Balkan region |
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Authors: | M Anastasiou Th Hasapis T Zorba E Pavlidou K Chrissafis K M Paraskevopoulos |
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Institution: | (1) Solid State Physics Section, Physics Department, Aristotle University of Thessaloniki, Thessaloniki, Greece, 54124 |
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Abstract: | Historic
plasters from wall paintings of Byzantine and post-Byzantine churches situated
in the Balkan region were studied. All wall paintings were made with fresco
technique and are dated from IX - XVI century. Plaster samples were followed
from room temperature to 1000°C by Thermogravimetric (TG) and Differential
Thermal Analysis (DTA), and one or two significant temperature regions, corresponding
to thermal decomposition mechanisms were observed. The analysis of the plaster
samples and the composition characterization was carried out using also, Fourier
Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM).
Although the main components are calcite and quartz (from sand) in different
proportions, there are differences between them such as the presence of gypsum
being either as a constituent element or due to environmental pollution. The
results are examined comparatively taking into account the creation time and
place of the paintings. |
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Keywords: | FTIR plaster SEM-EDS TG-DTA wall-paintings |
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