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Home  > Raw materials & technologies  > Applications  > Protective & Marine coatings  > Antifouling coatings avoid biofouling sett...

Monday, 16 September 2019
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Raw materials & technologies, Applications, Protective & Marine coatings

Antifouling coatings avoid biofouling settlement on submerged substrates

Monday, 14 July 2014

It is well known that during the first minutes of the immersion of any substrate in marine environments microbial colonisation takes place.

This event will condition the attachment of other more complex organisms and the substrate biodeterioration with concomitant loss of its functionality. The aim of a work conducted by Argentinean researchers was to assess antifouling coatings performance at early stages of immersion, in natural and artificial sea water, observing the surface condition, by scanning electron microscope (SEM), in order to predict possible results in long time immersion tests. The use of short time tests to predict future behaviour is useful to adjust formulations, reduce testing time and economics cost.

Derivatives obtained from tannin were evaluated

In this study antifouling (AF) coatings formulated with two "quebracho” tannin derivatives were chosen to be evaluated by short and long time tests. One of this coatings possessed in a longer service life, until ten months of exposure, and at the same time, this resulted correlated with surface analysis at early stages of immersion by SEM.

The study is published in: Progress in Organic Coatings, Volume 77, Issue 9, September 2014, Pages 1400-1407.

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