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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:51 |
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Conference: Bucharest University Faculty of Physics 2014 Meeting
Section: Atomic and Molecular Physics; Astrophysics
Title:
EPR and FT-IR investigation of accelerated aged painting binders
Authors:
V. BERCU(1), Maria MARINESCU(2), Ana EMANDI(2), O. G. DULIU(1), Ioana STANCULESCU(2), I. EMANDI(3)
Affiliation:
1)University of Bucharest, Faculty of Chemistry, Bucharest, Romania
2)University of Bucharest, Faculty of Physics, Magurele, Ilfov, Romania
3)University of Bucharest, Doctoral School on Physics, Ilfov, Romania
E-mail
vasile.bercu@fizica.unibuc.ro
Keywords:
binders, artificial aging, EPR, FT-IR
Abstract:
The results of EPR and FT-IR investigations of some binders used in classical paintings and artificial aged binders: linseed oil, hen yolk and linseed oil/hen yolk are presented and discussed. Three different aging agents was used: carbon dioxide, sulfur dioxide and nitrogen oxides. Accordingly, the FT-IR spectra of all binders showed a set of characteristic modifications. This makes it possible to select the most representative bands which, acting as a fingerprints, provided evidence of certain specific combinations for each binder and the polluting agents. The EPR spectroscopy was helpful in choosing the most appropriate chemical reactions whose products were identified in the corresponding FT-IR spectra.
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