Fouling-Release Properties of Dendritic Polyglycerols against Marine Diatoms

Dendritic polyglycerols (PGs) were grafted onto surfaces using a ring-opening polymerization reaction, and the fouling-release properties against marine organisms were determined. The coatings were characterized by spectroscopic ellipsometry, contact angle goniometry, ATR-FTIR, and stability tests i...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2018-10, Vol.10 (41), p.34965-34973
Main Authors: Wanka, Robin, Finlay, John A, Nolte, Kim A, Koc, Julian, Jakobi, Victoria, Anderson, Charlotte, Clare, Anthony S, Gardner, Harrison, Hunsucker, Kelli Z, Swain, Geoffrey W, Rosenhahn, Axel
Format: Article
Language:English
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Summary:Dendritic polyglycerols (PGs) were grafted onto surfaces using a ring-opening polymerization reaction, and the fouling-release properties against marine organisms were determined. The coatings were characterized by spectroscopic ellipsometry, contact angle goniometry, ATR-FTIR, and stability tests in different aqueous media. A high resistance toward the attachment of different proteins was found. The PG coatings with three different thicknesses were tested in a laboratory assay against the diatom Navicula incerta and in a field assay using a rotating disk. Under static conditions, the PG coatings did not inhibit the initial attachment of diatoms, but up to 94% of attached diatoms could be removed from the coatings after exposure to a shear stress of 19 Pa. Fouling release was found to be enhanced if the coatings were sufficiently thick. The excellent fouling-release properties were supported in dynamic field-immersion experiments in which the samples were continually exposed to a shear stress of 0.18 Pa.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.8b12017