Three-dimensional solubility parameters and chemical protective clothing permeation. II. Modeling diffusion coefficients, breakthrough times, and steady-state permeation rates of organic solvents in Viton gloves.
J Appl Polym Sci 1993 Oct; 50(3):531-540
The potential of using a model to aid in selection of chemical protective clothing (CPC) for use in industrial settings was evaluated. This new approach used solubility parameters to determine explicit values of the solubility and diffusion coefficient, which were then placed in Fickian diffusion equations and used to estimate breakthrough times (BT) and steady state permeation rates (SSPR). This approach has a more rigorous physical and theoretical basis than earlier approaches which involved comparisons of solubility parameter differences directly with BT and SSPR values. This approach also has the advantage of accounting for temperature and CPC polymer cross linking in estimating solubilities. The accuracy of the approach was tested using published data on the permeation of 18 solvents though commercial Viton glove samples. Physical constants and permeation test results were provided for the 18 solvents. For the 15 solvents with reported analytical detection limits, modeled BT values were within a factor of three of experimental values. Modeled SSPR values were within a factor of six of experimental values for 15 solvents with valid SSPR measurements.
NIOSH-Publication; NIOSH-Grant; Control-technology; Organic-solvents; Protective-clothing; Gloves; Personal-protective-equipment; Solvent-vapors
Environmental & Indust Health University of Michigan 109 S Observatory Ann Arbor, MI 48109-2029
Journal of Applied Polymer Science
University of Michigan at Ann Arbor, Ann Arbor, Michigan