The ζ-potential for a concentrated colloidal dispersion: The colloidal primitive model vs. the cell model

Héctor M. Manzanilla-Granados; Felipe Jiménez-Ángeles; Marcelo Lozada-Cassou

doi:10.1016/j.colsurfa.2010.11.005

The ζ-potential for a concentrated colloidal dispersion: The colloidal primitive model vs. the cell model

Héctor M. Manzanilla-Granados, Felipe Jiménez-Ángeles, Marcelo Lozada-Cassou

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19 Scopus citations

Abstract

The colloidal primitive model (CPM) for a concentrated colloidal dispersion is studied through the well established hypernetted chain/mean spherical approximation integral equations theory (HNC/MSA-CPM). For comparison the corresponding cell model (CM) theory and other simpler approaches are calculated. Important deviations of the CM results, are found: The HNC/MSA-CPM theory predicts a polarity inversion of ζ-potential for several conditions, always associated with charge reversal, whereas none of the other approaches predict such an inversion. We discuss the possible implications of our results in relation to electrophoretic mobility.

Original language	English
Pages (from-to)	59-66
Number of pages	8
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	376
Issue number	1-3
DOIs	https://doi.org/10.1016/j.colsurfa.2010.11.005
State	Published - 20 Feb 2011
Externally published	Yes

Keywords

Cell model
Colloidal primitive model
Concentrated colloidal dispersion
Integral equations
Poisson-Boltzmann
ζ-potential

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10.1016/j.colsurfa.2010.11.005

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abstract = "The colloidal primitive model (CPM) for a concentrated colloidal dispersion is studied through the well established hypernetted chain/mean spherical approximation integral equations theory (HNC/MSA-CPM). For comparison the corresponding cell model (CM) theory and other simpler approaches are calculated. Important deviations of the CM results, are found: The HNC/MSA-CPM theory predicts a polarity inversion of ζ-potential for several conditions, always associated with charge reversal, whereas none of the other approaches predict such an inversion. We discuss the possible implications of our results in relation to electrophoretic mobility.",

keywords = "Cell model, Colloidal primitive model, Concentrated colloidal dispersion, Integral equations, Poisson-Boltzmann, ζ-potential",

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The ζ-potential for a concentrated colloidal dispersion: The colloidal primitive model vs. the cell model. / Manzanilla-Granados, Héctor M.; Jiménez-Ángeles, Felipe; Lozada-Cassou, Marcelo.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 376, No. 1-3, 20.02.2011, p. 59-66.

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

TY - JOUR

T1 - The ζ-potential for a concentrated colloidal dispersion

T2 - The colloidal primitive model vs. the cell model

AU - Manzanilla-Granados, Héctor M.

AU - Jiménez-Ángeles, Felipe

AU - Lozada-Cassou, Marcelo

PY - 2011/2/20

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N2 - The colloidal primitive model (CPM) for a concentrated colloidal dispersion is studied through the well established hypernetted chain/mean spherical approximation integral equations theory (HNC/MSA-CPM). For comparison the corresponding cell model (CM) theory and other simpler approaches are calculated. Important deviations of the CM results, are found: The HNC/MSA-CPM theory predicts a polarity inversion of ζ-potential for several conditions, always associated with charge reversal, whereas none of the other approaches predict such an inversion. We discuss the possible implications of our results in relation to electrophoretic mobility.

AB - The colloidal primitive model (CPM) for a concentrated colloidal dispersion is studied through the well established hypernetted chain/mean spherical approximation integral equations theory (HNC/MSA-CPM). For comparison the corresponding cell model (CM) theory and other simpler approaches are calculated. Important deviations of the CM results, are found: The HNC/MSA-CPM theory predicts a polarity inversion of ζ-potential for several conditions, always associated with charge reversal, whereas none of the other approaches predict such an inversion. We discuss the possible implications of our results in relation to electrophoretic mobility.

KW - Cell model

KW - Colloidal primitive model

KW - Concentrated colloidal dispersion

KW - Integral equations

KW - Poisson-Boltzmann

KW - ζ-potential

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EP - 66

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

IS - 1-3

ER -

The ζ-potential for a concentrated colloidal dispersion: The colloidal primitive model vs. the cell model

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Keywords

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