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Comments on two-phase measurements using a resistive probe

✍ Scribed by T. T. Anderson

Publisher: American Institute of Chemical Engineers
Year: 1964
Tongue: English
Weight: 842 KB
Volume: 10
Category: Article
ISSN: 0001-1541
DOI: 10.1002/aic.690100541

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✦ Synopsis

Permeation of methane, ethane, ethylene, propane, butane, nitrous oxide, carbon dioxide, and dichlorodifluoromethane through polyethylene films was in- vestigoted.

Both Henry's law and Fick's law are obeyed for carbon dioxide permeation through polyethylene at pressures up to 1 1 atm. and over a temperature range from 14" to 4OOC. For other gases permeability is pressure dependent and i s described by P = Po exp (Ap). Based on this expression a modified diffusion law is proposed. Po for nonpolar, organic gases i s correlated by their boiling points. Constant A is correloted by the Hildebrand solubility parameters of the gas and polymer. ~

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