Sediment challenge to promising ultra-low fouling hydrophilic surfaces in the marine environment.

Autor:	Koc J; a Analytical Chemistry - Biointerfaces, Ruhr University Bochum , Bochum , Germany., Simovich T; a Analytical Chemistry - Biointerfaces, Ruhr University Bochum , Bochum , Germany., Schönemann E; b Institute of Chemistry, Universität Potsdam , Potsdam , Germany., Chilkoti A; c Biomedical Engineering , Duke University , Durham , North Carolina , USA., Gardner H; d Center for Corrosion & Biofouling Control, Florida Institute of Technology , Melbourne , FL , USA., Swain GW; d Center for Corrosion & Biofouling Control, Florida Institute of Technology , Melbourne , FL , USA., Hunsucker K; d Center for Corrosion & Biofouling Control, Florida Institute of Technology , Melbourne , FL , USA., Laschewsky A; b Institute of Chemistry, Universität Potsdam , Potsdam , Germany.; e Fraunhofer Institute of Applied Polymer Research IAP , Potsdam , Germany., Rosenhahn A; a Analytical Chemistry - Biointerfaces, Ruhr University Bochum , Bochum , Germany.
Jazyk:	angličtina
Zdroj:	Biofouling [Biofouling] 2019 Apr; Vol. 35 (4), pp. 454-462. Date of Electronic Publication: 2019 May 15.
DOI:	10.1080/08927014.2019.1611790
Abstrakt:	Hydrophilic coatings exhibit ultra-low fouling properties in numerous laboratory experiments. In stark contrast, the antifouling effect of such coatings in vitro failed when performing field tests in the marine environment. The fouling release performance of nonionic and zwitterionic hydrophilic polymers was substantially reduced compared to the controlled laboratory environment. Microscopy and spectroscopy revealed that a large proportion of the accumulated material in field tests contains inorganic compounds and diatomaceous soil. Diatoms adhered to the accumulated material on the coating, but not to the pristine polymer. Simulating field tests in the laboratory using sediment samples collected from the test sites showed that incorporated sand and diatomaceous earth impairs the fouling release characteristics of the coatings. When exposed to marine sediment from multiple locations, particulate matter accumulated on these coatings and served as attachment points for diatom adhesion and enhanced fouling. Future developments of hydrophilic coatings should consider accumulated sediment and its potential impact on the antifouling performance.
Databáze:	MEDLINE
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