Nanocontainer aqueous systems for removing polymeric materials from marble surfaces: A new and promising tool in cultural heritage conservation |
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| Authors: | Scilla Grassi Monica Favaro Patrizia Tomasin Luigi Dei |
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| Institution: | aDipartimento di Chimica & Consorzio CSGI, Università degli Studi di Firenze, via della Lastruccia, 3, 50019 Sesto Fiorentino, Italy;bCNR-ICIS, Corso Stati Uniti, 4 35127 Padova, Italy |
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| Abstract: | The present study dealt with the characterisation of marble surfaces coated by three kinds of polymeric material usually employed in stones conservation and with the evaluation of the removal of these coatings from the surfaces by means of new nanocontainer aqueous systems constituted of micellar solutions (MS) and oil-in-water microemulsions (MC). The polymeric coatings were also subjected to accelerated artificial ageing in order to detect possible effects associated to natural photochemical ageing. The aim of the work was the assessment of the performance of such nanocontainer aqueous systems taking acetone (Ac) as a reference “traditional” solvent for the removal procedure. The characterisation was carried out by means of Scanning Electron Microscopy (SEM) and Environmental Scanning Electron Microscopy (ESEM), Fourier Transform Infra-Red (FTIR) and Nuclear Magnetic Resonance (NMR) spectroscopies and the results obtained showed that the performance of these innovative methods based on nanocontainer aqueous systems can be considered highly promising in the view of a “green approach” to the conservation of cultural heritage. |
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| Keywords: | Marble surfaces Conservation Polymeric patinas Micellar solutions Oil-in-water microemulsions |
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