Predictive models of solvent permeation through chemical protective clothing.
Department of Environmental and Industrial Health, School of Public Health, University of Michigan, Ann Arbor, Michigan 1997 May:393 pages
The final report of a comprehensive investigation into the permeation of solvents through chemical protective clothing (CPC) to develop and validate predictive permeation models of individual solvents and binary solvent mixtures was presented. Four types of commercial polymeric CPC glove materials were tested with up to 53 organic solvents from 13 chemical classes. Binary solvent mixtures were examined for a representative subset of 10 pairs of these solvents, and the effect of temperature on the uptake and permeation of individual solvents was studied for additional subsets. As part of this study a critical assessment was made of the testing procedures recommended in the standard permeation test method, the ASTM Method F739. Of the 156 solvent-CPC combinations for which breakthrough time (BT) values were measured, over 87% were within a factor of two of the experimental BT values and over 97% were within a factor of three. For binary solvent mixtures the models were less accurate. A number of recommendations were offered to improve the ASTM Method F739 so that the data on permeation resistance by CPC manufacturers and end users was more reliable. The data set generated in this study was the largest single existing data set on the solubility and permeation of organic solvents through CPC materials. Permeation tests revealed that out of the 176 solvent- CPC combinations tested, 54% gave BT less than 15 minutes and only 24% gave BTs of over 60 minutes.
NIOSH-Grant; Humans; Control-technology; Hazardous-materials; Personal-protective-equipment; Protective-clothing; Chemical-industry-workers; Laboratory-workers; Organic-solvents;
Environmental & Indust Health University of Michigan 1420 Washington Heights Ann Arbor, MI 48109-0292
Final Grant Report
Department of Environmental and Industrial Health, School of Public Health, University of Michigan, Ann Arbor, Michigan
University of Michigan at Ann Arbor, Ann Arbor, Michigan