SPECTROSCOPY STUDIES ON CONSERVATION ISSUES IN MODERN AND CONTEMPORARY ART PAINTINGS

SPECTROSCOPY STUDIES ON CONSERVATION ISSUES IN MODERN AND CONTEMPORARY ART PAINTINGS

Joana Domingues*, Francesca Rosi**, Grazia De Cesare***, Costanza Miliani**** * Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Lisboa, Portugal (Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.) ** SMAArt - Scientific Methodologies Applied to Archaeology and Art, University of Perugia, Italy (Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.) *** Istituto Superiore per la conservazione ed il restauro, Roma, Italy (Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.) **** National Research Council, Institute for Molecular Science and Technology CNR-ISTM, Perugia, Italy (Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.)

Abstract
In the present work conservation issues on laser cleaning of modern and contemporary painting are studied in order to assist the conservator’s work in choosing right cleaning methodologies. Therefore, an analytical method is presented using micro-FTIR and micro-Raman assisted with optical microscopy on mock-ups with different commercial paint formulations, over which several laser cleaning parameters were applied. Recognizing the importance of in situ analyses, correspondent portable equipments were also covered. Some alterations phases could be found, mainly by binder degradation, and the titanium white pigment showed significant alteration in the Raman spectra.
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