SILVEA PRUTEANU, ION SANDU, MARIA CRISTINA TIMAR,  MARIUS MUNTEANU, VIORICA VASILACHE, IRINA CRINA ANCA SANDU<br>Ecological Systems Applied for Cleaning Gilding in Old Icons

SILVEA PRUTEANU, ION SANDU, MARIA CRISTINA TIMAR, MARIUS MUNTEANU, VIORICA VASILACHE, IRINA CRINA ANCA SANDU
Ecological Systems Applied for Cleaning Gilding in Old Icons

Abstract:

The cleaning interventions of icons and old gilded decorative frames represent a great challenge for the curator and the restorer. This type of restoration treatment requires an interdisciplinary approach in order to respect the mandatory experimental protocols: the assessment of the conservation state, developing the cleaning solutions by applying washing tests, that are compatible with the nature of the dirt deposits and with the original materials, and finally the monitoring of interventions through appropriate selection of methods and interdisciplinary techniques of scientific investigation. Cleaning interventions that require organic solvents are highly toxic for the operator, and that is why nowadays, traditional cleaning processes that make use of plant extracts and aqueous extracts of plants are studied more and more. Also, because the cleaning process touches the integrity of the noble patina, and in cases of surfaces that are gilded directly on the ground layer (boles) or on other painting layers, that act differently upon wash, there is the risk of exudates, of advanced softening of the painting layer, of peeling the gilded areas, of material losses, of dirt and some color components getting scattered etc. Washing tests require mandatory differentiated protocols for the two gilding cases presented in the paper. This paper presents a study on using natural, water based systems (infusions, extracts, decoctions) for cleaning dirt deposit from the surfaces of two type of gilding encountered on an old wooden icon. An organic alcohol (95%) based solution, slightly alkalinized with a water ammonia solution (25%) that was compatible with the varnished gildings, was used as a reference system. SEM-EDX, micro-FTIR and CIE L*a*b* colorimetry techniques were implemented. Keywords: icon, old wood, cleaning, aqueous extracts, micro- FTIR, SEM-EDX, CIE L*a*b* Colorimetry

Issue: 2014, Volume 65, Issue 12

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This article is published under the Creative Commons Attribution 4.0 International License

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