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- Title
The synergistic effect of an imidazolium salt and benzotriazole on the protection of bronze surfaces with chitosan-based coatings.
- Authors
Silva da Conceição, Debora Kelen; Nunes de Almeida, Kauana; Nhuch, Elsa; Raucci, Maria Grazia; Santillo, Chiara; Salzano de Luna, Martina; Ambrosio, Luigi; Lavorgna, Marino; Giuliani, Chiara; Di Carlo, Gabriella; Staccioli, Maria Paola; Falcade, Tiago; Schrekker, Henri Stephan
- Abstract
The class of imidazolium salts contains effective anticorrosion additives for metal substrates. This study evaluated the potential of 1-carboxymethyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide (HO2CC1MImNTf2) for application in cultural heritage, exploring it as anticorrosion additive in chitosan-based coatings for the protection of copper-based alloys. Under accelerated corrosion conditions with HCl vapor, the chitosan coating with HO2CC1MImNTf2 was less effective than the one with benzotriazole. The coating with a combination of HO2CC1MImNTf2 and benzotriazole resulted in the optimal protective efficacy of the bronze surface, and it also maintained high transparency without changing the bronze appearance.
- Subjects
BENZOTRIAZOLE; SURFACE coatings; BRONZE; SALTS; CULTURAL property
- Publication
Heritage Science, 2020, Vol 8, Issue 1, p1
- ISSN
2050-7445
- Publication type
Article
- DOI
10.1186/s40494-020-00381-4