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Permeation of alkylbenzene isomers of molecular weight 120 through nitrile gloves
Author(s) -
Tsai ChinHsiang,
Que Hee Shane S.
Publication year - 1996
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/(sici)1097-4628(19960509)60:6<833::aid-app6>3.0.co;2-k
Subject(s) - permeation , nitrile , logarithm , chemistry , toluene , solubility , analytical chemistry (journal) , organic chemistry , mathematics , mathematical analysis , biochemistry , membrane
Factors determining the permeation of eight alkylbenzene isomers of molecular weight 120.19 (three ethyl toluenes, three trimethylbenzenes, and two propl benzenes) were investigated for a lined nitrile industrial type glove using an ASTM‐type cell, liquid collection, and gas chromatography/mass spectrometry. The initial permeation rate P i correlated inversely with the logarithm of the lag time t l . The logarithm of the steady‐state permeation rate P s correlated inversely with the logarithm of the breakthrough time t b . P s / P i for a given compound correlated directly with P s and with t l / t b . P i depended directly on the logarithm of the entropy of fusion divided by the square of the refractive index and divided by the solubility parameter. The t b was inversely correlated to the logarithm of the water solubility. The logarithm of t l was most directly correlated to the entropy of vaporization. High P s for 1,2,4‐trimethylbenzene, m ‐ethyltoluene, and p ‐ethyl toluene was linked to a common structural similarity to 1,2,4‐trimethylbenzene relative to the unhindered geometry of the methyl group in the ethyl side chain. The existence of optimum radii of gyration for enhanced P s and for long t b suggested that the protective properties of nitrile followed discontinuous relationships rather than continuous ones and so are not explainable by correlative relationships of continuous functions. © 1996 John Wiley & Sons, Inc.