Journal
MATERIALS & DESIGN
Volume 101, Issue -, Pages 218-225Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2016.03.124
Keywords
Fouling release; Eco-friendly; Silicone nanocomposites; Photo-nanospheres; Self-cleaning; Field trial
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The remarkable surface properties and favorable environmental effects of non-stick, silicone-based, and fouling release (FR) coatings have supported their economic and ecological applications in the marine shipping industry since organotin compounds have been banned. A novel series of solar light-boosted nanocomposites was prepared and characterized, and these materials were applied as a modern stream for ship hull FR technology in field. The design of eco-friendly, ultraviolet visible (UV-vis) smart, silicone-enriched, spherical TiO2 nanocomposites for maritime navigation applications was demonstrated. Rutile TiO2 photonanospheres with dominant [110] facets were synthesized and controlled through the sol-gel technique. Different nanofiller concentrations were blended in silicone nanocomposites through polymer solution casting for comparative purposes. The single-crystal TiO2 photonanofiller enrichment of vinyl-terminated polydimethylsiloxane matrix enhanced photocatalytic activity, a feature that is significant in designing solar-spectrum-boosted self-cleaning surfaces. These investigations revealed that thewell-dispersed polymer matrix/photonanofillers influenced the surface wettability, chemical properties, and mechanical features of the prepared FR nanocomposites. The nanocomposites exhibited the best self-cleaning performance at 0.5% nanofillers after UV-vis irradiation. Biological assessments involving a one-month laboratory assay of bacterial and yeast species and a 12-month natural seawater field trial revealed that the modeled nanocomposites exerted a marked photobactericidal effect. (C) 2016 Elsevier Ltd. All rights reserved.
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