Notice catalographique « Evaluation of two sacrificial anti-graffiti polysaccharide coatings for the conservation of outdoor contemporary murals »
- Titre
- Evaluation of two sacrificial anti-graffiti polysaccharide coatings for the conservation of outdoor contemporary murals
- Auteur ou éditeur
- Gagné, Laurence
- Lieu de publication
- Kingston, Ont.
- Maison d'édition
- Queen's University
- Date de publication
- 2014
- Collation
- vii, 71pgs.; ill. (chiefly colour)
- Résumé
- "In recent years, the conservation of outdoor contemporary murals has attracted much attention and concern as many murals were in a serious state of decline. The issues surrounding the preventive and active conservation of outside contemporary murals are numerous and multidimensional. Among these, the increasing issue of graffiti vandalism is probably one of the most damaging to murals. The efficacy of the PSS 20 and the APP S, two sacrificial anti-graffiti polysaccharide-based coatings, were tested in this study. These coatings are described by their manufacturers as being easily reversible, clear, non-toxic, biodegradable, environmentally friendly, and compatible with most surfaces including painted surfaces. They thus present promising proprieties. The objective of this study was to verify the efficacy of new products providing new tools to artists, conservators and concerned authorities, to face the growing challenge of graffiti vandalism. PSS 20 and the APP S were tested for their stability and reversibility in response to accelerated aging and graffiti vandalism. Mural surrogates were prepared on two different substrates: red clay bricks and cement boards. The substrates were covered with a layer of high quality primer, an excellent lightfast acrylic paint layer and then with the anti-graffiti coatings PSS 20 and APP S. The properties of the coatings including pH, colour, gloss, adhesion, abrasion resistance, and overall surface appearance were measured before and after accelerated aging. The ability of the coatings to act as a barrier layer against graffiti was evaluated at three different times: before, after three years and after ten years of artificial aging. A layer of spray paint and felt marker was applied to the surrogates. After graffiti and coating removal, cross sections of the surrogates were made and evaluated with optical and scanning electron microscopy; possible abrasion of the paint surface and penetration of graffiti materials was evaluated. In order to study their chemical deterioration, the coatings were analysed with Fourier transform infrared spectroscopy (FTIR), size exclusion chromatography (SEC), and water contact angle. These analyses were performed through the different stages of aging. The experimental results of this study will provide new insights about the efficacy of the anti-graffiti coatings PSS 20 and APP S."
- Langue
- English = Anglais
- Sujet
- Mural painting and decoration - Conservation and restoration
- Graffiti
- Polysaccharides
- Peinture et décoration murales
- Pays
- Canada
- Type de document
- Monograph = Monographie
- Localisation
- TH 3411 G34 2014
- Clé
- 17510
- Collection
- Catalogue