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Three‐dimensional solubility parameters and chemical protective clothing permeation. I. Modeling the solubility of organic solvents in Viton® golves
Author(s) -
Zellers Edward T.
Publication year - 1993
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1993.070500315
Subject(s) - solubility , hildebrand solubility parameter , solvent , permeation , polymer , thermodynamics , chemistry , materials science , organic chemistry , physics , membrane , biochemistry
Abstract A model based on the polymer solution theory of Flory and Rehner is presented for estimating the solubility of organic solvents in chemical protective clothing (CPC) polymers using three‐dimensional (3‐D) solubility parameters. Immersion test solubility values of 40 organic solvents in commercial Viton® glove samples are used to develop and assess the performance of the model. It is found that the solvent‐polymer 3‐D solubility parameter differences must be weighted to obtain accurate solubility estimates. However, in most cases, a single weighting factor is sufficient to bring estimated values within a factor of two of experimental values for the members of a given chemical class. The effect of temperature on solubility from 25 to 37°C is predicated within 6%, on average, for the subset of 17 solvents examined. In the companion article that follows, solubility values estimated with this approach are combined with diffusion coefficients, also estimated using 3‐D solubility parameters, to determine solvent‐Viton breakthrough times and steady‐state permeation rates. © 1993 John Wiley & Sons, Inc.