STP1544

    Destructive Adsorption for Enhanced Chemical Protection

    Published: Oct 2012


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    Abstract

    Destructive adsorption was studied as a mechanism to provide enhanced chemical protection for traditional textiles. A test procedure for chemical protective clothing fabrics using low volume contamination was used to focus on chemical protection by the mechanism of adsorption. Conventional woven fabrics were treated with two self-decontaminating textile treatments, N-halamine (chlorinated 1, 3-dimethylol-5, 5-dimethylhydantoin (DMDMH)) and MgO nanoparticles; a third treatment included starch in addition to MgO. Both N-halamine and MgO treatments demonstrated some degree of degradation of the toxin aldicarb. However, the MgO-treated specimens exhibited more degradative products and reduction of aldicarb than the N-halamine DMDMH. The fabric treatments containing the MgO nano-particles resulted in destructive adsorption of aldicarb resulting in self-decontamination. Inclusion of starch with the MgO resulted in fabric that exhibited evidence of both physical adsorption and destructive adsorption of the toxin. The role of destructive adsorption to decontaminate traditional fabrics was clearly demonstrated. This self-decontamination enhances chemical protection at low volume contamination.

    Keywords:

    adsorption, MgO, N-halamine, self decontamination, protective clothing, aldicarb


    Author Information:

    Obendorf, S. Kay
    Cornell Univ., Ithaca, NY

    Spero, Ellan F.
    Cornell Univ., Ithaca, NY


    Paper ID: STP103884

    Committee/Subcommittee: F23.20

    DOI: 10.1520/STP103884


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