Quantitative measurements of capillary absorption in thin porous media by the Automatic Scanning Absorptometer

C.J. Kuijpers; T.A.P. van Stiphout; H.P. Huinink; N. Tomozeiu; S.J.F. Erich; O.C.G. Adan

doi:10.1016/j.ces.2017.12.024

Quantitative measurements of capillary absorption in thin porous media by the Automatic Scanning Absorptometer

C.J. Kuijpers
, T.A.P. van Stiphout
, H.P. Huinink
, N. Tomozeiu
, S.J.F. Erich
, O.C.G. Adan

Research output: Contribution to journal › Article › Academic › peer-review

20 Citations (Scopus)

428 Downloads (Pure)

Abstract

A 1D model based on Darcy's law is proposed to allow quantitative measurements of the penetration depth of water-glycerol-hexanediol mixtures in thin porous media using an Automatic Scanning Absorptometer (ASA). The limitations of this 1D model are discussed with respect to the nozzle dimensions and the liquid penetration depth. The penetration depth scales with liquid (viscosity and surface tension (η σ)) and media parameters (average pore radius (r)) as predicted by Darcy's law for Al₂O₃ disks that are inert to the liquid components. The penetration dynamics in PVDF and MCE filter membranes show a deviation from Darcy's law, indicating specific liquid – media interaction with at least one of the liquid components. Furthermore a linear time regime is observed in the early stages of liquid penetration for time scales much larger than for which inertia effects are expected. This can on the one hand indicate that either, the liquid does not move into the fibrous samples as a homogenous liquid, or that the porous material deforms during the liquid imbibition process. On the other hand, it could be an effect resulting from the complexity of the porous structure itself and an indication of surface film flow formation.

Original language	English
Pages (from-to)	70-81
Number of pages	12
Journal	Chemical Engineering Science
Volume	178
DOIs	https://doi.org/10.1016/j.ces.2017.12.024
Publication status	Published - 16 Mar 2018

Funding

This research was carried out under project number M61.2.12454a in the framework of the research Program of the Materials innovation institute (M2i) ( www.m2i.nl ) in association with Océ Technologies b.v. The authors would like to thank Peter Lipman (TU/e) for his help with the MIP measurements and Tiny Ritzen (Océ Technologies b.v.) for her help with the SEM measurements. Furthermore the authors would like to thank Benjamin Voogt (TU/e) for his help in determining the tortuosity of the membranes. Furthermore, the authors express their gratitude to Henk-Jan Koier (Océ Technologies b.v.) for his help with the rheology measurements and to Patrick Huber for proofreading the manuscript. Also, the permanent support of the A&PS department of Océ Technologies b.v. is acknowledged.

Keywords

ASA
Darcy's law
Inkjet printing
NMR
Thin porous media

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10.1016/j.ces.2017.12.024Licence: CC BY

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title = "Quantitative measurements of capillary absorption in thin porous media by the Automatic Scanning Absorptometer",

abstract = "A 1D model based on Darcy's law is proposed to allow quantitative measurements of the penetration depth of water-glycerol-hexanediol mixtures in thin porous media using an Automatic Scanning Absorptometer (ASA). The limitations of this 1D model are discussed with respect to the nozzle dimensions and the liquid penetration depth. The penetration depth scales with liquid (viscosity and surface tension (η σ)) and media parameters (average pore radius (r)) as predicted by Darcy's law for Al2O3 disks that are inert to the liquid components. The penetration dynamics in PVDF and MCE filter membranes show a deviation from Darcy's law, indicating specific liquid – media interaction with at least one of the liquid components. Furthermore a linear time regime is observed in the early stages of liquid penetration for time scales much larger than for which inertia effects are expected. This can on the one hand indicate that either, the liquid does not move into the fibrous samples as a homogenous liquid, or that the porous material deforms during the liquid imbibition process. On the other hand, it could be an effect resulting from the complexity of the porous structure itself and an indication of surface film flow formation.",

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AU - Kuijpers, C.J.

AU - van Stiphout, T.A.P.

AU - Huinink, H.P.

AU - Tomozeiu, N.

AU - Erich, S.J.F.

AU - Adan, O.C.G.

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N2 - A 1D model based on Darcy's law is proposed to allow quantitative measurements of the penetration depth of water-glycerol-hexanediol mixtures in thin porous media using an Automatic Scanning Absorptometer (ASA). The limitations of this 1D model are discussed with respect to the nozzle dimensions and the liquid penetration depth. The penetration depth scales with liquid (viscosity and surface tension (η σ)) and media parameters (average pore radius (r)) as predicted by Darcy's law for Al2O3 disks that are inert to the liquid components. The penetration dynamics in PVDF and MCE filter membranes show a deviation from Darcy's law, indicating specific liquid – media interaction with at least one of the liquid components. Furthermore a linear time regime is observed in the early stages of liquid penetration for time scales much larger than for which inertia effects are expected. This can on the one hand indicate that either, the liquid does not move into the fibrous samples as a homogenous liquid, or that the porous material deforms during the liquid imbibition process. On the other hand, it could be an effect resulting from the complexity of the porous structure itself and an indication of surface film flow formation.

AB - A 1D model based on Darcy's law is proposed to allow quantitative measurements of the penetration depth of water-glycerol-hexanediol mixtures in thin porous media using an Automatic Scanning Absorptometer (ASA). The limitations of this 1D model are discussed with respect to the nozzle dimensions and the liquid penetration depth. The penetration depth scales with liquid (viscosity and surface tension (η σ)) and media parameters (average pore radius (r)) as predicted by Darcy's law for Al2O3 disks that are inert to the liquid components. The penetration dynamics in PVDF and MCE filter membranes show a deviation from Darcy's law, indicating specific liquid – media interaction with at least one of the liquid components. Furthermore a linear time regime is observed in the early stages of liquid penetration for time scales much larger than for which inertia effects are expected. This can on the one hand indicate that either, the liquid does not move into the fibrous samples as a homogenous liquid, or that the porous material deforms during the liquid imbibition process. On the other hand, it could be an effect resulting from the complexity of the porous structure itself and an indication of surface film flow formation.

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KW - NMR

KW - Thin porous media

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JF - Chemical Engineering Science

ER -

Quantitative measurements of capillary absorption in thin porous media by the Automatic Scanning Absorptometer

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