A method for pore size and porosity analysis of porous materials using electroacoustics and high frequency conductivity.
Dukhin A, Swasey S, Thommes M (2013)
Publication Type: Journal article, Original article
Subtype: other
Publication year: 2013
Journal
Publisher: Elsevier B.V.
Book Volume: 437
Pages Range: 127-132-132
DOI: 10.1016/j.colsurfa.2013.01.018
Abstract
Electroacoustic measurement of the seismoelec. current generated by ultrasound in wetted porous materials yields information on pore size in certain situations. This occurs when elec. double layers inside the pore overlap or when the pore size is sufficiently large that for a given frequency the hydrodynamic flow cannot achieve a steady Poiseuille profile inside of the pores. Indeed, we show exptl. that magnitude and phase of the seismoelec. current become pore size dependent in such systems. Calcns. of pore size from such exptl. raw data requires information concerning the porosity of the material. We suggest using high frequency cond. measurement of the porous material to det. a "formation factor", which is the ratio of the wetted porous material cond. to the cond. of a equil. supernate. Porosity calcns. from the formation factor can be done by applying the Maxwell-Wagner theory. We provide exptl. verification that this theory can be applied for porous materials. [on SciFinder(R)]
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APA:
Dukhin, A., Swasey, S., & Thommes, M. (2013). A method for pore size and porosity analysis of porous materials using electroacoustics and high frequency conductivity. Colloids and Surfaces A-Physicochemical and Engineering Aspects, 437, 127-132-132. https://dx.doi.org/10.1016/j.colsurfa.2013.01.018
MLA:
Dukhin, A., S. Swasey, and Matthias Thommes. "A method for pore size and porosity analysis of porous materials using electroacoustics and high frequency conductivity." Colloids and Surfaces A-Physicochemical and Engineering Aspects 437 (2013): 127-132-132.
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