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Tested cleaning systems.

Tested cleaning systems.

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Article
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This paper describes the multi-analytical approach implemented for the study of the oil painting Il Venditore di Cerini made by Antonio Mancini in 1878. The research was carried out to characterize both the original stratigraphy and the alleged non-original varnish on the surface. SEM/EDS analysis showed the presence of pigments already detected in...

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Context 1
... cleaning systems listed in Table 1 were tested as potential solutions for the selective removal of the aged varnish which was on the painting's surface. The choice of operating with them was made after the identification of the suitable Fd parameter-i.e., the energy from dispersion forces between molecules-achieved through the implementation of the solubility test developed by P. Cremonesi [27][28][29]. ...
Context 2
... G ® was directly added to the products at room temperature, then magnetic stirring was used to provide a homogeneous gel. Cleaning systems n • 1, 2, 4, and 6 were simply applied using a swab and little mechanical action to evaluate the removal of the aged varnish (Table 1) [30]. Cleaning systems n • 3 and 5 were applied using two sheets of Japanese paper as an intermediate layer to avoid the release of hydroxypropylcellulose's residues on the surface. ...
Context 3
... systems n • 3 and 5 were applied using two sheets of Japanese paper as an intermediate layer to avoid the release of hydroxypropylcellulose's residues on the surface. Then, Japanese paper was removed, and a dry swab was used to clean the surface from the extra solvent (Table 1). ...
Context 4
... cleaning systems listed in Table 1 were tested as potential solutions for the selective removal of the aged varnish which was on the painting's surface. The choice of operating with them was made after the identification of the suitable Fd parameter-i.e., the energy from dispersion forces between molecules-achieved through the implementation of the solubility test developed by P. Cremonesi [27][28][29]. ...
Context 5
... G ® was directly added to the products at room temperature, then magnetic stirring was used to provide a homogeneous gel. Cleaning systems n • 1, 2, 4, and 6 were simply applied using a swab and little mechanical action to evaluate the removal of the aged varnish (Table 1) [30]. Cleaning systems n • 3 and 5 were applied using two sheets of Japanese paper as an intermediate layer to avoid the release of hydroxypropylcellulose's residues on the surface. ...
Context 6
... systems n • 3 and 5 were applied using two sheets of Japanese paper as an intermediate layer to avoid the release of hydroxypropylcellulose's residues on the surface. Then, Japanese paper was removed, and a dry swab was used to clean the surface from the extra solvent (Table 1). ...

Citations

... MPBSICMOS camera. Two filters were used to observe the fluorescence, namely the HOYA UV-IR filter cut 52 and the Yellow 495 52 mm F-PROMRC022 [37,38]. Spectro-colorimetric analysis was performed before and after the treatment using a portable spectrophotometer Y3060 3 nh, with a D65 illuminant, 8 mm size aperture, in the SCI mode (Specular Component Included). ...
Article
Full-text available
Biodegradation is among the most common issues affecting Cultural Heritage stone materials in outdoor environments. In recent years, the application of chemical agents with biocidal activity has been the most usual practice when dealing with biofilm removal. In outdoor environments , the use of these biocides is not effective enough, since the materials are constantly exposed to environmental agents and atmospheric pollutants. Thus, it becomes necessary to protect the surface of Cultural Heritage works with antimicrobial coatings to either prevent or at least limit future colo-nization. In this study, innovative biocides-both natural and synthetic-were applied on a Roman mosaic located in the Archaeological Park of Ostia Antica to compare their effectiveness in removing the biological degradation affecting it. In addition, an antimicrobial coating called "SI-QUAT" was applied and analyzed in situ. SI-QUAT has recently entered the market for its prevention activity against biocolonization. The biocidal activity of these products was tested and monitored using different analytical portable instruments, such as the multispectral system, the spectrocolorimeter, and the bioluminometer. The analyses showed that promising results can be obtained using the combination of the biocide and the protective effect of Preventol ® RI50 and SI-QUAT.
... At the time of the analysis, the artwork showed aged layers of a coating material, incoherent sediments of dust, and lifting of the paint layer, mostly evident in the central area. Therefore, the implemented multi-analytical approach allowed the acquiring of significant elements to identify the materials and the structure of the stratigraphy, also providing substantial information to define the need for cleaning treatment of the artwork [9,10]. Multispectral imaging, Raman spectroscopy, and DinoLite acquisitions were carried out in the Restoration Laboratory of the Galleria Nazionale d'Arte Moderna e Contemporanea in Rome, enabling the selection of the more significative sampling areas to perform micro-invasive analyses, and providing relevant data regarding the varnish layer and the artistic technique ( Figure 1). ...
... The analysis was carried out using Madatec multispectral system, which consists of a full-spectrum Samsung NX500 Digital Camera (28.2 MP BSI CMOS) and Madatec spotlights with 365 nm (UV) wavelength. Images of the induced fluorescence were taken using the Yellow 495 52 mm F-PRO MRC 022 filter to reduce the blue component of the UV spotlight, thus better highlighting possible fluorescence effects [9,10,12]. An IR filter at 750 nm was used to acquire IR images. ...
Article
Full-text available
In this study, the investigation of the oil painting on canvas I Tesori del Mare made by Plinio Nomellini in 1901 is presented. The aim of the research was threefold: the examination of the state of conservation in view of the restoration treatment, together with the identification of the causes of degradation and the study of the artistic technique. During the years, the artwork underwent several cleaning and fixing interventions, resulting in a patchy appearance of the surface. Nevertheless, the presence of consistent liftings persists, while the protective coating shows uneven chromatic alteration, both requiring further analysis. Multispectral imaging allowed for better visualization of the figuration’s structure and the restored areas. The combined use of Raman spectroscopy, Fourier Transform Infrared spectroscopy in the Attenuated Total Reflection mode (FT-IR ATR), and Scanning Electron Microscopy coupled with an Energy Dispersive Spectroscopy (SEM/EDS) enabled better understanding of the stratigraphy through the identification of some pigments, the binder, and the aged varnish layer on the top. SEM/EDS highlighted the presence of zinc in both the ground layer and the paint layers. Furthermore, FT-IR ATR spectroscopy showed peaks related to metal soaps such as zinc stearate, which are known to cause severe delamination of the paint layers, explaining the recurring lifting issues. Eventually, the varnish layer was found to be acrylic resin, presumably mixed with varnishes applied in past restoration treatments.