Titania precipitation on cotton has been achieved utilizing a commercially available antimicrobial polymer, Reputex 20. The cotton swatches precipitated with titania retain antimicrobial activity and we have also shown the ability to encapsulate diisopropylfluorophosphatase (DFPase), an enzyme capable of breaking down organofluorophosphates such as diisopropylfluorophosphate (DFP). Cotton swatches are easily prepared and precipitation occurs at room temperature in aqueous solutions at near neutral pH. Fluoride assays are used to demonstrate enzyme activity and bacterial overlays show zones of clearing against S. aureus. Both the antimicrobial properties of Reputex 20 and the hydrolytic activity of the DFPase enzyme are retained after titania precipitation, generating a cotton material exhibiting multifunctional properties. Initial laundering studies will also be presented showing durability of the coating material on the cotton swatch.

Multifunctional coatings created using an antimicrobial polymer as a platform for titania precipitation on cotton

251st National Meeting (2016)

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