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- Title
Sharply Reduced Biofilm Formation from Cobetia marina and in Black Sea Water on Modified Siloxane Coatings.
- Authors
Akuzov, Danail; Franca, Lia; Grunwald, Ingo; Vladkova, Todorka
- Abstract
Siloxane fouling release coatings are currently the only viable non-toxic commercial alternative to toxic biocide antifouling paints. However, they only partially inhibit biofouling since biofilms remain a major issue. With the aim to improve the bacterial resistance of siloxane coatings modified with non-ionic surfactant (NIS), antioxidant (AO) or both NIS/AO, the ability of PEG-silane co-cross-linker was investigated to reduce <italic>Cobetia marina</italic> adhesion and multispecies biofilm formation from natural seawater. Surface physical-chemical and physical-mechanical parameters relevant to bio-adhesion were estimated before the testing of the biofilm formation. Slightly reduced biofilm from <italic>C. marina</italic> and sharply reduced multispecies biofilm, formed in natural sea water, were found on the PEG-silane co-cross-linked coatings without modifying additives. However, both <italic>C. marina</italic> growth and biofilm formation from natural sea water were sharply reduced on the PEG-silane co-cross-linked coatings containing NIS or AO, even more, no <italic>C. marina</italic> adhesion was seen on the coating containing NIS and AO simultaneously. Possible explanations of the observed effects are presented in this article. It was concluded that the PEG-silane co-cross-linker, toghether with NIS and AO, can be used as an efficient tool to additionally reduce the bioadhesion of Gram-negative marine bacteria and multispecies biofilm formation on siloxane antifouling coatings.
- Subjects
BIOFILMS; SILOXANES; SURFACE coatings; MARINE bacteria; GRAM-negative bacteria; POLYETHYLENE glycol; PREVENTION
- Publication
Coatings (2079-6412), 2018, Vol 8, Issue 4, p136
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings8040136