Next Article in Journal
Insights on Eastern Hellenistic Historical and Archaeological Material Culture of the Oikoumene: Globalisation and Local Socio-Cultural Identities
Previous Article in Journal
‘Your’s Truly’: The Creation and Consumption of Commercial Tourist Portraits
Article

Preliminary Studies of the Effects of Nanoconsolidants on Mural Paint Layers with a Lack of Cohesion

1
HERCULES Laboratory, University of Évora, Palácio do Vimioso, Largo Marquês de Marialva, 8, 7000-809 Évora, Portugal
2
Chemistry Department of School of Sciences and Technology, University of Évora, Rua Romão Ramalho 59, 7000-671 Évora, Portugal
*
Author to whom correspondence should be addressed.
Academic Editor: Jiri Rathousky
Heritage 2021, 4(4), 3288-3306; https://doi.org/10.3390/heritage4040183
Received: 30 August 2021 / Revised: 24 September 2021 / Accepted: 6 October 2021 / Published: 12 October 2021
This paper reports the preliminary results of a comparative analysis of the effects of three consolidants on the color appearance of fresco paint layers affected by lack of cohesion. In vitro assays were performed with a laboratory-synthesized nanolime, a commercial nanolime (CaLoSiL® IP25), and a commercial acrylic resin (PrimalTM SF-016 ER®) applied by nebulization over two sets of replicas of buon and lime fresco painted with red and yellow ochres and smalt pigments. The paint layers were surveyed before, one week, and one month after treatment with technical photography in the visible range (Vis) and ultraviolet-induced fluorescence in the visible range (UVF), as well as optical microscopy (OM-Vis), colorimetry, spectrophotometry, and scanning electron microscopy coupled with energy dispersive x-ray spectroscopy (SEM-EDS). Experimental work also comprised the synthesis of nanolime and its characterization by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and thermogravimetry analysis (TGA-DTG). The results show no alteration on pigments’ spectral curves and elemental composition. The increase in the CIEL* coordinate and ∆E color variation noticed after the treatment with the nanolimes is associated with a white haze formation on the paint surfaces. The impact on color appearance is higher on the darker tones. View Full-Text
Keywords: consolidants; frescoes; nanolime; acrylic resin; synthesis; colorimetry; OM-Vis; SEM-EDS consolidants; frescoes; nanolime; acrylic resin; synthesis; colorimetry; OM-Vis; SEM-EDS
Show Figures

Graphical abstract

MDPI and ACS Style

Baiza, B.; Gil, M.; Galacho, C.; Candeias, A.; Girginova, P.I. Preliminary Studies of the Effects of Nanoconsolidants on Mural Paint Layers with a Lack of Cohesion. Heritage 2021, 4, 3288-3306. https://doi.org/10.3390/heritage4040183

AMA Style

Baiza B, Gil M, Galacho C, Candeias A, Girginova PI. Preliminary Studies of the Effects of Nanoconsolidants on Mural Paint Layers with a Lack of Cohesion. Heritage. 2021; 4(4):3288-3306. https://doi.org/10.3390/heritage4040183

Chicago/Turabian Style

Baiza, Berenice, Milene Gil, Cristina Galacho, António Candeias, and Penka I. Girginova 2021. "Preliminary Studies of the Effects of Nanoconsolidants on Mural Paint Layers with a Lack of Cohesion" Heritage 4, no. 4: 3288-3306. https://doi.org/10.3390/heritage4040183

Find Other Styles

Article Access Map by Country/Region

1
Back to TopTop