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Castillo SI, Thies-Weesie DM, Philipse AP. Formation and liquid permeability of dense colloidal cube packings. Phys Rev E Stat Nonlin Soft Matter Phys. 2015;91(2):022311doi: 10.1103/PhysRevE.91.022311.
Castillo, S. I., Thies-Weesie, D. M., & Philipse, A. P. (2015). Formation and liquid permeability of dense colloidal cube packings. Physical review. E, Statistical, nonlinear, and soft matter physics, 91(2), 022311. https://doi.org/10.1103/PhysRevE.91.022311
Castillo, Sonja I R, et al. "Formation and liquid permeability of dense colloidal cube packings." Physical review. E, Statistical, nonlinear, and soft matter physics vol. 91,2 (2015): 022311. doi: https://doi.org/10.1103/PhysRevE.91.022311
Castillo SI, Thies-Weesie DM, Philipse AP. Formation and liquid permeability of dense colloidal cube packings. Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Feb;91(2):022311. doi: 10.1103/PhysRevE.91.022311. Epub 2015 Feb 26. PMID: 25768509.
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Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Feb;91(2):022311. doi: 10.1103/PhysRevE.91.022311. Epub 2015 Feb 26.

Formation and liquid permeability of dense colloidal cube packings.

Physical review. E, Statistical, nonlinear, and soft matter physics

Sonja I R Castillo, Dominique M E Thies-Weesie, Albert P Philipse

Affiliations

  1. Van 't Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute for Nanomaterials Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.

PMID: 25768509 DOI: 10.1103/PhysRevE.91.022311

Abstract

The liquid permeability of dense random packings of cubic colloids with rounded corners is studied for solid hematite cubes and hollow microporous silica cubes. The permeabilities of these two types of packings are similar, confirming that the micropores in the silica shell of the hollow cubes do not contribute to the permeability. From the Brinkman screening length √k of ∼16 nm, we infer that the relevant pores are indeed intercube pores. Furthermore, we relate the permeability to the volume fraction and specific solid volume of the cubes using the Kozeny-Carman relation. The Kozeny-Carman relation contains a constant that accounts for the topology and size distribution of the pores in the medium. The constant obtained from our study with aspherical particles is of the same order of magnitude as those from studies with spherical and ellipsoidal particles, which supports the notion that the Kozeny-Carman relation is applicable for any dense particle packing with (statistically) isotropic microstructures, irrespective of the particle shape.

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