Abstract
Abstract Organic inorganic hybrid coatings were prepared using a commercial triethoxysilane α,ω substituted perfluoropolyether as organic phase in combination with tetraethyl orthosilicate (TEOS) as inorganic phase. The coatings were prepared by sol-gel synthesis of a silica coating in co-presence with the commercial polymer, and deposited on stainless steel substrates by dip-coating procedure. The interactions between the organic and the inorganic components were studied by means of X-ray photoelectron spectroscopy. The synergistic effect of the two opposite phases permitted to obtain hydrophobic coatings (contact angle CA of ∼140°) with high resistance against thermal or mechanical stresses induced in liquid media. The hybrid coatings thus obtained to possess suitable properties for application as anti-fouling coatings in liquid environments. Specific tests performed in particulate fouling conditions confirmed the ability of the hybrid coatings to mitigate CaSO 4 deposits formation, maintaining unaltered the CA value after exposition for 43 days to a flux of a CaSO 4 solution at a flowrate of 0.15 m/s.
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