AI Article Synopsis
- The Coronavirus pandemic impacted cultural sites globally, leading to the introduction of alcohol-based sanitizers to ensure visitor safety while protecting artworks.
- In this study, the interaction between commonly used sanitizing solutions and silk—often found in tapestries and upholsteries—was specifically examined.
- While major chemical changes in silk were not detected, some variations in dye intensity and slight color fading were observed after exposure to the sanitizing solutions, raising concerns about the visual integrity of these textiles.
Article Abstract
The ongoing Coronavirus crisis involved almost all sectors as well as museums, collections, and historical sites all over the world. Even though artworks do not have the ability to spread the virus, the pandemic officially introduced in cultural sites alcohol-based products (even by visitors for personal use) as these products were indicated to be able to inactivate the virus and were imposed by many local authorities. In this context, the need to conciliate the safety of the visitors and the protection of artworks represents a challenging task. The possibility that accumulation of vapour coming from the sanitizing solutions or from accidental spills, potentially caused also by visitors, should be considered. The study focuses specifically on the possible interactions between sanitizing alcohol-based products and silk, since this material is present in many cultural sites all over the world on upholsteries and tapestries. The recommended sanitising solution (75% ethanol, 20% water, 5% benzalkonium chloride) selected by the Italian Ministry for Cultural Heritage (MIBACT) was considered. Pure distilled water, absolute ethanol and water/ethanol blends in different concentrations were also tested. Chemical and morphological variations on the silk have been evaluated with Scanning Electron Microscopy - SEM, Atomic Force Microscopy - AFM and portable instruments (contact microscope, colorimeter, Infrared and Raman spectroscopy). IR and Raman analyses did not detect significant chemical changes in silk. However, Raman spectra showed, after immersion treatments, minor variations in the intensity of peaks attributed to dyes. Residues of benzalkonium chloride after immersion tests in sanitising solution are present, confirmed also by SEM and AFM analyses. Even if chemical spectroscopic changes were not relevant, the colour of few samples seemed to consistently fade after immersion treatments, thus affecting the visual appearance of textiles.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9186382 | PMC |
| http://dx.doi.org/10.1016/j.culher.2021.06.012 | DOI Listing |
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