Anti-biofouling glass

Anti-biofouling glass - Anti-algae biofouling glass This...

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Anti-algae biofouling glass This technology and process is a novel way of incorporating an environmentally-friendly algaecide into optical quality polymers to be used for instrument coverglass or viewing glass. Two EPA approved algaecides were used successfully in the process. Diuron and Irgarol 1051 were incorporated into Polymethylmethacrylate (PMMA) with no loss in optical transmission quality of the sample. Testing involved comparing the anti-biofouling acrylic versus a non- impregnated control samples in a salt-water aquarium containing Chlorella capsulata (an aggressive marine algae). The initial test was taken over a 35 day period where the samples showed no accumulation of algae and no measurable decrease in optical transmission in the visible spectrum (400-800 nm). The active ingredient appears to leach very slowly from the PMMA matrix (below the detection limit of our UV-Visible spectrometer, resulting in a leach rate in the nanograms/cm^2/day range). The technology was created for an SBIR grant from the National Oceanic and Atmospheric
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