Adhesive and Rheological Features of Ecofriendly Coatings with Antifouling Properties

Author:

Scolaro Cristina1ORCID,Liotta Leonarda Francesca2ORCID,Calabrese Carla2ORCID,Marcì Giuseppe3ORCID,Visco Annamaria14ORCID

Affiliation:

1. Department of Engineering, University of Messina, Contrada Di Dio, 98166 Messina, Italy

2. Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)-CNR, Via Ugo La Malfa 153, 90146 Palermo, Italy

3. “Schiavello-Grillone” Photocatalysis Group, Department of Engineering, University of Palermo, Viale Delle Scienze, 90128 Palermo, Italy

4. Institute for Polymers, Composites and Biomaterials, CNR-IPCB, Via P. Gaifami 18, 9-95126 Catania, Italy

Abstract

In this work, formulations of “environmentally compatible” silicone-based antifouling, synthesized in the laboratory and based on copper and silver on silica/titania oxides, have been characterized. These formulations are capable of replacing the non-ecological antifouling paints currently available on the market. The texture properties and the morphological analysis of these powders with an antifouling action indicate that their activity is linked to the nanometric size of the particles and to the homogeneous dispersion of the metal on the substrate. The presence of two metal species on the same support limits the formation of nanometric species and, therefore, the formation of homogeneous compounds. The presence of the antifouling filler, specifically the one based on titania (TiO2) and silver (Ag), facilitates the achievement of a higher degree of cross-linking of the resin, and therefore, a better compactness and completeness of the coating than that attained with the pure resin. Thus, a high degree of adhesion to the tie-coat and, consequently, to the steel support used for the construction of the boats was achieved in the presence of the silver–titania antifouling.

Funder

Project “SI-MARE”

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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