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Assessment of Antifouling Potential of Novel Transparent Sol Gel Coatings for Application in the Marine Environment

School of Chemical Sciences and DCU Water Institute, Dublin City University, Glasnevin, Dublin 9, Ireland
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Academic Editor: Ahmad Mehdi
Molecules 2019, 24(16), 2983; https://doi.org/10.3390/molecules24162983
Received: 17 July 2019 / Revised: 11 August 2019 / Accepted: 14 August 2019 / Published: 16 August 2019
(This article belongs to the Special Issue Sol-Gel Chemistry. From Molecule to Functional Materials)
In recent years, there has become a growing need for the development of antifouling technology for application in the marine environment. The accumulation of large quantities of biomass on these surfaces cause substantial economic burdens within the marine industry, or adversely impact the performance of sensor technologies. Here, we present a study of transparent coatings with potential for applications on sensors or devices with optical windows. The focus of the study is on the abundance and diversity of biofouling organisms that accumulate on glass panels coated with novel transparent or opaque organically modified silicate (ORMOSIL) coatings. The diatom assessment was used to determine the effectiveness of the coatings against biofouling. Test panels were deployed in a marine environment in Galway Bay for durations of nine and thirteen months to examine differences in biofilm formation in both microfouling and macrofouling conditions. The most effective coating is one which consists of precursor, tetraethyl orthosilicate (HC006) that has a water contact angle > 100, without significant roughness (43.52 nm). However, improved roughness and wettability of a second coating, diethoxydimethylsilane (DMDEOS), showed real promise in relation to macrofouling reduction. View Full-Text
Keywords: sol gel chemistry; hydrophobic; hydrophilic; antifouling; biofilm formation; transparent coatings sol gel chemistry; hydrophobic; hydrophilic; antifouling; biofilm formation; transparent coatings
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Richards, C.; Briciu-Burghina, C.; Jacobs, M.R.; Barrett, A.; Regan, F. Assessment of Antifouling Potential of Novel Transparent Sol Gel Coatings for Application in the Marine Environment. Molecules 2019, 24, 2983.

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