AI Article Synopsis
- A new method for measuring liquid entry pressure is used to analyze the hydrophobic properties of microporous membranes with aqueous alcohol solutions.
- The study investigates how different factors like alcohol type, concentration, and temperature affect membrane performance.
- Two theoretical equations are proposed to determine membrane pore size, accounting for deviations in surface tension due to membrane structure and stable alcohol concentrations.
Article Abstract
A new concept of liquid entry pressure measurements is applied to study the hydrophobicity of microporous membranes for aqueous alcohol solutions. The effects of alcohol concentration, type of alcohol, and temperature on liquid entry pressure of the membrane have been studied. Two theoretical equations for the determination of membrane pore size have been proposed. The former equation was developed taking into account the deviation from the Laplace-Young equation due to the membrane structure by means of the structure angle. The latter equation was established considering only the range of alcohol concentration in which the dispersion component of liquid surface tension remains practically constant. Hydrophobicity has been expressed in terms of wetting surface tension, gamma(L)(w). Based on these measurements, the maximum concentration before the spontaneous wetting occurs would be predicted. Copyright 2000 Academic Press.
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| http://dx.doi.org/10.1006/jcis.2000.7106 | DOI Listing |
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