- 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 ofHydrophilic 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.…
MetadatenAuthor details: | Julian KocORCiD, Tomer Simovich, Eric Schönemann, Ashutosh ChilkotiORCiD, Harrison Gardner, Geoffrey W. SwainORCiD, Kelli HunsuckerORCiD, André LaschewskyORCiDGND, Axel RosenhahnORCiDGND |
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DOI: | https://doi.org/10.1080/08927014.2019.1611790 |
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ISSN: | 0892-7014 |
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ISSN: | 1029-2454 |
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Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/31088166 |
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Title of parent work (English): | Biofouling : the journal of bioadhesion and biofilm research |
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Publisher: | Taylor & Francis |
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Place of publishing: | London |
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Publication type: | Article |
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Language: | English |
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Year of first publication: | 2019 |
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Publication year: | 2019 |
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Release date: | 2021/02/08 |
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Tag: | field test; fouling release; hydrogel; marine biofouling; sediment |
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Volume: | 35 |
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Issue: | 4 |
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Number of pages: | 9 |
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First page: | 454 |
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Last Page: | 462 |
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Funding institution: | Deutsche Forschungsgemeinschaft (DFG)German Research Foundation (DFG) [LA 611/14-1, RO 2524/4-1]; Office of Naval Research (ONR)Office of Naval Research [N00014-16-12979, N00014-16-1-3123]; Fraunhofer High Performance Center for Functional lntegration in Materials |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
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DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
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Peer review: | Referiert |
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