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.[Figure not available: see fulltext.]
The synergistic effect of an imidazolium salt and benzotriazole on the protection of bronze surfaces with chitosan-based coatings / Silva da Conceicao, D.K., Nunes de Almeida, K., Nhuch, E., Raucci, M.G., Santillo, C., Salzano de Luna, M., Ambrosio, L., Lavorgna, M., Giuliani, C., Di Carlo, G., Staccioli, M.P., Falcade, T., Schrekker, H.S.. - In: HERITAGE SCIENCE. - ISSN 2050-7445. - 8:1(2020). [10.1186/s40494-020-00381-4]
The synergistic effect of an imidazolium salt and benzotriazole on the protection of bronze surfaces with chitosan-based coatings
Salzano de Luna M.;
2020
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.[Figure not available: see fulltext.]| File | Dimensione | Formato | |
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Descrizione: The synergistic effect of an imidazolium salt and benzotriazole on the protection of bronze surfaces with chitosan-based coatings
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