Surface-Active Ionic-Liquid-Based Coatings as Anti-Biofilms for Stone: An Evaluation of Their Physical Properties

The biodeterioration of stone surfaces can be a threat to the conservation built heritage. Much effort has been put into finding treatments and processes mitigate biocolonization its effects, both in terrestrial underwater environments. Recently, use surfactant ionic liquids shown have biocidal antifouling effects on stone. However, little information is currently available morphological physical properties such coatings. In this paper, we report characterization coatings based an liquid (IL) consisting N-(2-hydroxyethyl)-N,N-dimethyl-1-do-decanaminium cation combination bromide dodecylbenzenesulfonate (DBS) anions molar ratio 3:1, respectively. Nanosilica tetraethyl orthosilicate were used as binders promote adhesion surface. applied Carrara marble samples analyzed using Scanning Electronic Microscopy (SEM), static contact angles, colorimetric measurements capillary water absorption. resistance UV radiation seawater was also investigated. results show that IL behaves differently depending binder. latter influences arrangement wettability, which decreases case NanoEstel, whereas parameter increases Estel. addition, good degradation agents.