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Textile Research Journal
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Pesticide Barrier Performance of Selected Nonwoven Fabrics in Laboratory Capillary and Pressure Penetration Testing

John L. Crouse

The University of Tennessee, Textile Materials Research Center, Knoxville, Tennessee 37996, U.S.A.

Jacqueline O. Dejonge

The University of Tennessee, Textile Materials Research Center, Knoxville, Tennessee 37996, U.S.A.

Frank Calogero

The University of Tennessee, Textile Materials Research Center, Knoxville, Tennessee 37996, U.S.A.

Laboratory spray tests have been used to evaluate the protection offered by two distinct nonwoven fabrics with and without fluorocarbon finishes. The fabrics were contaminated with dicofol field spray mix at coverage levels ranging from 50 to 200 mg/m 2, values typical of actual field exposures of pesticide spray applicators. Half the samples were subjected to an external compression pressure of 1 psi immediately after contamination (pressure penetration test). The remaining fabrics were allowed to dry without manipulation (capillary penetration test). Increasing contamination level and application of an external mechanical pressure greatly increased the pene tration of dicofol through all test fabrics. All four test fabrics provided protection against capillary penetration, usually at levels greater than 99%. In pressure penetration testing, the performance of the two unfinished fabrics was significantly better than that of the finished fabrics.

Textile Research Journal, Vol. 60, No. 3, 137-142 (1990)
DOI: 10.1177/004051759006000303
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