Pore size distributions in microporous membranes. A critical analysis of the bubble point extended method |
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Authors: | A Hernández JI CalvoP Prádanos F Tejerina |
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Institution: | Depto. Física Aplicada II, Fac. Ciencias, Univ. Valladolid, 47071 Valladolid, Spain |
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Abstract: | An extended bubble point method has been used to examine the porous morphology of several track-etched microporous polycarbonate membranes with nominal pore sizes ranging from 0.1 to 5.0 μm. The technique has been carefully analyzed and corrected to take into account the diverse non-ideal factors in flow along with the prevalence of Knudsen flow over the Hagen-Poiseuille one in the smaller pores. |
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Keywords: | Microporous membranes Pore size distributions Bubble point extended methods Knudsen flow Hagen-Poiseuille gas flow |
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