Non-biocidal Anti-fouling Coatings

Callow, Maureen E.; Pitchers, R. A.; Santos, Regina Consolação dos

doi:10.1007/978-94-009-1363-9_6

Cited by 20 publications

(9 citation statements)

References 4 publications

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“…Silicone foul-release coatings are currently under evaluation as an alternative nontoxic technology (Callow & Fletcher, 1994;Brady, 2000;Darkangelo Wood et al, 2000;Truby et al, 2000). Although organisms can attach to silicones, they can be removed either by brushing or by hydrodynamic self-cleaning (Callow et al, 1988;Meyer et al, 1994;Swain & Schultz, 1996). Fouling coverage on silicone coatings is generally less than on other nontoxic surfaces Watermann et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Structure-Property Relationships of Silicone Biofouling-Release Coatings: Effect of Silicone Network Architecture on Pseudobarnacle Attachment Strengths

et al. 2003

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Model silicone foul-release coatings with controlled molecular architecture were evaluated to determine the effect of compositional variables such as filler loading and crosslink density on pseudobarnacle attachment strength. Pseudobarnacle adhesion values correlated with filler loadings in both condensation and hydrosilylation-cured silicones. Variation of crosslink density of hydrosilylationcured silicones had an insignificant effect on attachment strength. X-ray photoelectron spectroscopy (XPS) indicated that the mode of failure upon detachment of the pseudobarnacle was dependent upon the crosslink density; samples with high crosslink density failed cohesively within the silicone.

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Section: Introductionmentioning

confidence: 99%

Structure-Property Relationships of Silicone Biofouling-Release Coatings: Effect of Silicone Network Architecture on Pseudobarnacle Attachment Strengths

et al. 2003

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“…The field observation that heavy slime films and macroalgal sporelings are frequently associated with silicone elastomers cured by DBTDL in the first few weeks following immersion (Callow et al, 1987), may be due in part to attraction of motile algal spores to these surfaces. However, early colonisation by macroalgae may not adversely affect the long-term performance of commercial silicone coatings with this curing agent, since the combined effects of minimal adhesion and grazing will ensure that surfaces remain relatively free of algal fouling (Callow et al, 1987;Swain et al, 1998).…”

Section: Discussionmentioning

confidence: 99%

“…Amongst the algal colonisers, diatom slimes adhere tenaciously (Callow et al, 1987;Waterman et al, 1997) whilst common macrofouling algae such as Enteromorpha and Ectocarpus never appear to persist for long on effective foul-release surfaces (Callow et al, 1986). However, a recent study by Swain et al (1998) has shown that the relatively low numbers of fouling organisms routinely encountered on silicone elastomer-coated raft panels at a testing site in Florida, was largely the consequence of grazing and prédation, facilitated by the low strengths of adhesion of the organisms.…”

Section: Introductionmentioning

confidence: 91%

Enhanced adhesion and chemoattraction of zoospores of the fouling algaenteromorphato some foul‐release silicone elastomers

Callow¹,

Callow

1998

Biofouling

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Significantly higher numbers of zoospores of the fouling, green alga Enteromorpha adhered to silicone elastomers cured by dibutyltin dilaurate (DBTDL) than to identical polymers cured by dibutyltin diacetate (DBTDA). Enhanced zoospore adhesion was shown to be due to the presence of DBTDL and the effect was concentration-dependent. Further experiments revealed that enhanced zoospore adhesion also occurred to glass coverslips coated with lauric acid (C 12 ) and other saturated fatty acids. The possibility that fatty acids may act as chemical cues (chemoattractants), guiding motile zoospores to the substratum for settlement in the natural environment is discussed. Settlement of other fouling organisms to DBTDL-cured silicone elastomers is currently being investigated.

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“…mineral depositions on teeth which is favoured by biofilms. In algal biofilms, precipitation of calcium carbonate is increased, mainly due to the rise in pH resulting from photosynthesis (Callow et al 1988) . However, other mechanisms may also play a role such as changing of the water activity by EPS molecules.…”

Section: What Is Biofouling?mentioning

confidence: 99%

Biofilm Control: Conventional and Alternative Approaches

Flemming

Ridgway

2008

Springer Series on Biofilms

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"Biofouling" is referred to as the unwanted deposition and growth of biofilms. This phenomenon can occur in an extremely wide range of opportunities ranging from colonization of medical devices, during production of ultrapure drinking and process water, and fouling of ship hulls, pipelines and reservoirs. Although biofouling occurs in such different areas, it has a common cause, which is the biofilm. Biofilms are the most successful form of life on earth and tolerate high concentrations of biocidal substances. Conventional anti-fouling approaches usually rely on the efficacy of biocides, aiming for inhibition of biofilm growth. It is important to keep in mind that killing of biofilm organisms usually does not solve biofouling problems as mostly the biomass is the problem and must be removed. Therefore, cleaning is at least equally important. However, for a sustainable antifouling strategy, an advanced approach is suggested, which includes the analysis of the fouling situation, a selection of suitable components of the "anti-fouling menu" and an effective and representative monitoring of biofilm development. One important part of this menu is nutrient limitation, which could be implemented on a much broader scale than is practiced today. Other items on the menu include methods to monitor unwanted biofilm development and assessment of the efficacy of anti-fouling measures. Also, natural anti-fouling strategies are worth exploring and learning from -and nature never relies on only one defence line but on integrated approaches.

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Non-biocidal Anti-fouling Coatings

Cited by 20 publications

References 4 publications

Structure-Property Relationships of Silicone Biofouling-Release Coatings: Effect of Silicone Network Architecture on Pseudobarnacle Attachment Strengths

Structure-Property Relationships of Silicone Biofouling-Release Coatings: Effect of Silicone Network Architecture on Pseudobarnacle Attachment Strengths

Enhanced adhesion and chemoattraction of zoospores of the fouling algaenteromorphato some foul‐release silicone elastomers

Biofilm Control: Conventional and Alternative Approaches

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