Monodisperse silica nanoparticles were synthesized by controlled microwave-assisted reactions using tetramethylorthosilicate in acetone.  These silica nanoparticles and fluorosilane moieties were incorporated via microwave synthetic techniques into and onto the silica matrix that encases the individual fibers of textile fabrics.  The high-surface-area silica nanoparticle-laden matrix provides protection from toxic vapors via adsorption while the fluorosilane provides protection from liquids.   The chemical adsorption of vapors is increased due to increased surface area of the silica nanoparticles as well as the porosity of the nanoparticles.  The chemical simulants, dimethyl methylphosphonate (DMMP) and 3-hepten-2-one, were tested to measure surface interactions and break-through on treated cotton fabrics.  Isotherms and vapor break-through were measured by inverse gas chromatography and by vapor permeation where the cotton treated with silica nanoparticles show a dramatic reduction of DMMP and 3-hepten-2-one.

Modification of cotton fibers with silica nanoparticles and silica species via microwave synthetic techniques for adsorption of chemical agents

243rd National Meeting (2012)

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