Polydimethyl siloxane coatings with superior antibiofouling efficiency in laboratory and marine conditions

Akuzov, Danail; Vladkova, T.; Zamfirova, Galya; Gaydarov, Valentin; Nascimento, Matheus Vieira; Szeglat, Nadine; Grunwald, Ingo

doi:10.1016/j.porgcoat.2016.10.028

Cited by 27 publications

(12 citation statements)

References 24 publications

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“…The observed, sharply reduced single-species biofilm on coating 6 ( Figure 5) due to a synergetic effect of NIS/AO is very interesting. Similar effects on multi-species biofilm formations were already observed at NIS/AO modified siloxane coatings, which were conventionally cross-linked with ES40 [9]. NIS usually makes difficult the initial microbial attachment, whereas AO intervenes in oxidative cross-linking processes.…”

Section: Single Species Biofilms Of C Marinasupporting

confidence: 60%

“…Now, antioxidant coatings are already discussed as a new environmentally friendly alternative to biocide paints [7,8]. Non-ionic surfactants, non-toxic antioxidants, or combinations thereof in modified siloxane composition coatings were developed by us that significantly reduce marine biofilm formation in both laboratory and field conditions [6,9], whereby the effect is most pronounced using a combination of surfactant and antioxidant. The multi-species biofilm developing on such coatings is sparse and easily removed by washing with running water or gently wiping [9].…”

Section: Introductionmentioning

confidence: 99%

“…Non-ionic surfactants, non-toxic antioxidants, or combinations thereof in modified siloxane composition coatings were developed by us that significantly reduce marine biofilm formation in both laboratory and field conditions [6,9], whereby the effect is most pronounced using a combination of surfactant and antioxidant. The multi-species biofilm developing on such coatings is sparse and easily removed by washing with running water or gently wiping [9]. On the other hand, PEG-silanes were also included in siloxane coatings to create protein-resistant surfaces for medical and microbiological applications [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…Incorporation of PEG-silane in the vulcanization network of siloxane elastomers has been used to create a micro-heterogeneous structure with hydrophilic and hydrophobic zones, known to be preferable to achieve decreased bio-fouling [16][17][18][19]. Our idea was to additionally improve the anti-bio-fouling activity formerly developed by us in siloxane composition coatings [3,6,9] by employing a PEG-silane co-cross-linker in an optimal combination with a non-ionic surfactant and non-toxic antioxidant. Hence, the aim of this investigation was to prepare such coatings, analyze their characterization and evaluate the mono-species biofilms' formation of C. marina, a Gram-negative bacterium extensively used as a model in marine bio-fouling research, as well as multi-species biofilms formation in natural sea water.…”

Section: Introductionmentioning

confidence: 99%

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Sharply Reduced Biofilm Formation from Cobetia marina and in Black Sea Water on Modified Siloxane Coatings

et al. 2018

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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 Cobetia marina 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 C. marina 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 C. marina 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 C. marina 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.

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Section: Single Species Biofilms Of C Marinasupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sharply Reduced Biofilm Formation from Cobetia marina and in Black Sea Water on Modified Siloxane Coatings

et al. 2018

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“…These biocides are one of the major contaminants in marine and freshwater ecosystems [260], and nowadays their use is forbidden. Therefore, there is an emergent interest in develop new coatings with controlled release of benign biocides [141,[261][262][263][264][265][266]. The use of nanocontainers loaded with biocides is considered a very attractive methodology, since a controlled release can minimize the environmental impact.…”

Section: Sol-gel Coatings With Anti-fouling Functionmentioning

confidence: 99%

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

Figueira

2020

Polymers

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The corrosion process is a major source of metallic material degradation, particularly in aggressive environments, such as marine ones. Corrosion progression affects the service life of a given metallic structure, which may end in structural failure, leakage, product loss and environmental pollution linked to large financial costs. According to NACE, the annual cost of corrosion worldwide was estimated, in 2016, to be around 3%-4% of the world's gross domestic product. Therefore, the use of methodologies for corrosion mitigation are extremely important. The approaches used can be passive or active. A passive approach is preventive and may be achieved by emplacing a barrier layer, such as a coating that hinders the contact of the metallic substrate with the aggressive environment. An active approach is generally employed when the corrosion is set in. That seeks to reduce the corrosion rate when the protective barrier is already damaged and the aggressive species (i.e., corrosive agents) are in contact with the metallic substrate. In this case, this is more a remediation methodology than a preventive action, such as the use of coatings. The sol-gel synthesis process, over the past few decades, gained remarkable importance in diverse areas of application. Sol-gel allows the combination of inorganic and organic materials in a single-phase and has led to the development of organic-inorganic hybrid (OIH) coatings for several applications, including for corrosion mitigation. This manuscript succinctly reviews the fundamentals of sol-gel concepts and the parameters that influence the processing techniques. The state-of-the-art of the OIH sol-gel coatings reported in the last few years for corrosion protection, are also assessed. Lastly, a brief perspective on the limitations, standing challenges and future perspectives of the field are critically discussed.Polymers 2020, 12, 689 The development of OIH sol-gel coatings, based on siloxanes, for corrosion mitigation, has been widely studied in the last few years [2,31,[36][37][38]. Numerous studies have been conducted since the early 1990s [39,40]. The studies performed showed that siloxanes were effective in mitigating the corrosion processes of different metallic substrates. This development was mainly due to the need for alternative environmentally friend materials and processes to replace the traditional chromium-based pre-treatments. Hexavalent chromium (Cr (VI)) is carcinogenic and shows high environmental toxicity and its use has been forbidden since 2006. However, Cr(VI) based pre-treatments improve the coating adherence to the substrate and are effective corrosion inhibitors [41][42][43] which make its replacement challenging. The use of the sol-gel method to produce OIH coatings for corrosion mitigation suits the main requirements of what should be an environmentally friendly process (i.e., excludes washing stages; it is a waste-free method) and allows one to obtain coatings with high purity and specific pore volumes and surface areas. Since it is a mild synthesis...

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Hydrophobicity and Superhydrophobicity in Fouling Prevention in Sea Environment

Ferrari

Cirisano

2018

Advances in Contact Angle, Wettability and Adhesion

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Polydimethyl siloxane coatings with superior antibiofouling efficiency in laboratory and marine conditions

Cited by 27 publications

References 24 publications

Sharply Reduced Biofilm Formation from Cobetia marina and in Black Sea Water on Modified Siloxane Coatings

Sharply Reduced Biofilm Formation from Cobetia marina and in Black Sea Water on Modified Siloxane Coatings

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

Hydrophobicity and Superhydrophobicity in Fouling Prevention in Sea Environment

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