STP989: Dispersion Mechanism of a Pesticide Chemical in Woven Fabric Structures

    Kim, CJ
    Associate professor and graduate student, Iowa State University, Ames, IA

    Kim, J-O
    Associate professor and graduate student, Iowa State University, Ames, IA

    Pages: 12    Published: Jan 1988


    Abstract

    The dispersion mechanism of a DDT solution in a variety of woven fabric structures is described. The dispersion is illustrated by scanning electron microscope (SEM) micrographs and related to fiber morphology, fabric geometry, weight, and finish. The kinetics of dispersion is related to the size and shape of the dispersion area and to the concentration of radioactive-labeled DDT. Findings show that final location of DDT within textile substrates is related to fiber content and morphology, fabric geometry, and finish. Fiber irregularities serve as deposit sinks for the chemical soil. The finish influences soil dispersion by making the fiber surface smoother. Fabric weight and geometry determine the size and shape of the dispersion area. The maximum concentration of DDT deposit is found to be at the outermost boundary of the dispersion area, not at the center.

    Keywords:

    capillary radius, chemical soil, cotton, cotton/polyester blend, DDT, deposit sink, dispersion areas, dispersion mechanism, fabric and yarn geometry, fiber morphology, finish, pesticide, polyester, protective clothing, radioactive-labeled, scanning electron micrographs


    Paper ID: STP26335S

    Committee/Subcommittee: F23.96

    DOI: 10.1520/STP26335S


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