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首页> 外文期刊>Journal of Applied Polymer Science >PERMEATION OF ALKYLBENZENE ISOMERS OF MOLECULAR WEIGHT 120 THROUGH NITRILE GLOVES
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PERMEATION OF ALKYLBENZENE ISOMERS OF MOLECULAR WEIGHT 120 THROUGH NITRILE GLOVES

机译：通过丁腈手套渗透分子量120的烷基苯异构体

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摘要

Factors determining the permeation of eight alkylbenzene isomers of molecular weight 120.19 (three ethyl toluenes, three trimethylbenzenes, and two propyl 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. (C) 1996 John Wiley & Sons, Inc. [References: 30]
机译：使用ASTM型池，液体收集和气相色谱/质谱法研究了衬里腈工业型手套的分子量为120.19的八个烷基苯异构体（三个乙基甲苯，三个三甲基苯和两个丙基苯）的渗透性的决定因素。 。初始渗透率P-i与滞后时间t（l）的对数成反比。对于给定的与Ps直接相关且与t（l）/ t（b）Pi相关的化合物，稳态渗透率Ps的对数与突破时间t（b）Ps / Pi的对数成反比。融合熵的对数除以折射率的平方，再除以溶解度参数。 t（b）与水溶性的对数成反比。 t（l）的对数与汽化熵最直接相关。相对于乙基侧链中甲基的不受阻碍的几何形状，1,2,4-三甲基苯，间乙基甲苯和对乙基甲苯的高P-s与1,2,4-三甲基苯的常见结构相似性相关。对于增强的P-s和较长的t（b），存在最佳回转半径，这表明腈的保护性能遵循不连续关系，而不是连续关系，因此无法通过连续功能的相关关系来解释。 （C）1996 John Wiley＆Sons，Inc. [参考：30]

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