| Egyptian Journal of Archeological and Restoration StudiesUSING THE GREEN NANOCOMPOSITE IN THE RESTORATION OF OIL PAINTINGS: APPLIED TO A 20TH CENTURY HISTORICAL OIL PAINTING.
Document Type: Original Article
DOI: 10.21608/ejars.2025.471784
pages: 197-208
Abo Taleb, Th. 1 (*) & Sabry, W. 2
1 Conservation dept., Faculty of Archaeology, Aswan Univ., Aswan
2 Polymers & Pigments dept., National Research Centre, Dokki, Giza, Egypt
Abstract:
The layers of oil paintings are exposed to inappropriate environmental changes that result in the degradation of paintings and the acidity of the canvas, causing the loss of mechanical pro-perties of canvas oil paintings and the deterioration of the layer painting. Oil paintings can be restored using green nanocomposite and treated using nanocomposite loaded on a polymer added with other compatible nanomaterials. This leads to the penetration of the treated material and the homogeneous surface. The green nanocomposite consists of polyelectrolyte-treated silica nanoparticles (SNP) and cellulose nanofibers (CNF) to strengthen the fabric and colors. Nanocomposite is a form of a film of CNF on the surface of the paint, which increases ductility, but without deep penetration. Thus, an additional component was introduced, i.e., SNP, for its ability to penetrate fiber. The present research paper discusses changing the SNP/CNF ratio to achieve appropriate reinforcement on experimental samples with different ratios (1:1, 9:1, and 1:9) to test the CMS@SNP/ CNF nanocomposite, and the materials were evaluated by measuring the mechanical properties. Moreover, tests and analyses of the layers of the painting, such as microscopic examination, SEM-EDX, Raman analysis, and assessment of the damage to the painting, were carried out to treat and restore the historical painting scientifically. The FTIR, colorimeter, and microscopic examination of the samples before and after photothermal aging and thermal aging confirmed the suitability of using the nanocomposite in a ratio of 1:9 and applied to a painting of the twentieth century (20 cm×50 cm) with cuts, gaps, weak texture, and falling off color crust.
Keywords:
Silica nanoparticles Degradation Consolidation Cellulose nanofibers SNP
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