Affiliation:
1. Department of Chemistry Ugo Schiff and CSGI , University of Florence , Via della Lastruccia 3, Sesto Fiorentino , 50019 Florence , Italy
2. Istituto per lo Studio dei Materiali Nanostrutturati, ISMN-CNR , Via Salaria Km 29.300-00015 Monterotondo Stazione (RM) , Italy
Abstract
Abstract
This paper presents an innovative poly(vinyl)alcohol-based film forming system, specifically devised for the controllable and selective cleaning of copper-based artifacts. Traditional cleaning procedures are commonly performed using mechanical and/or chemical methods. Unfortunately, both these methods present some limitations related to both the poor selectivity and invasiveness in case of the mechanical procedure, and to the scarce control over the involved reactions when dealing with a chemical approach. The innovative system proposed in this work allows combining the advantages of chemical and mechanical treatments thanks to the confinement of a complexing agent (EDTA) within a fluid, polymeric matrix, that is able to form a solid thin film upon drying. After treatment, the polymeric film can be completely removed from the artwork through a gentle peeling action. In this contribution, the film formation mechanism was investigated by means of thermal analysis and rheology; the role of plasticizers, volatile solvent fraction, and quantity of loaded EDTA is also discussed. Finally, the results of cleaning tests performed on artificially aged samples, and on a real case study, the “Fontana dei Mostri Marini” by Pietro Tacca in Florence, are presented.
Subject
General Chemical Engineering,General Chemistry
Reference44 articles.
1. D. A. Scott. J. Am. Inst. Conserv.29, 193 (1990).
2. D. A. Scott, J. Podany, B. B. Considine. Ancient & Historic Metals, The Getty Conservation Institute, Marina del Rey, CA (1991).
3. C. Degrigny. Survey of European Experiences on Cleaning Procedures, Nardini Editore, pp. 101–108 (2004).
4. S. Siano, J. Agresti, I. Cacciari, D. Ciofini. Appl. Phys. A106, 419 (2011).
5. D. A. Scott. Copper and Bronze in Art, The Getty Conservation Institute, Los Angeles, CA (2002).
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