Sedimentation potential in aqueous electrolytes

Marlow, Bruce J.; Rowell, Robert L.

doi:10.1021/la00061a013

Cited by 21 publications

(11 citation statements)

References 5 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, many electro-kinetic studies of concentrated suspensions have been challenged from different view points: the measurements of colloid vibration potential (CVP) of the concentrated suspension [2]; the rate of electro-osmosis at colloid occluded membranes [3]; the streaming potential on plugs of spherical polystyrene particles [4]; and the sedimentation potential on a glass microspheres [5]. The CVP method is a new and useful technique permitting direct measurements over a wide range of particle concentrations, i.e., from a diluted state overlapping microelectrophoresis, to 0 = 0.7.…”

Section: Introductionmentioning

confidence: 99%

Electrokinetic study on concentrated suspensions using colloid vibration potential measurements

Hozumi

Furusawa

1990

Colloid & Polymer Sci

View full text Add to dashboard Cite

~'-potentials of a silica suspension and three types of polystyrene latex suspensions with different surface charge groups were measured, as a function of the particle concentration (~) in the suspension over a wide range, using the colloid vibration potential (CVP) technique. The concentration dependence of the F-potential in silica suspension is explained well by Levine et al.'s [1] cell model theory, verifying the applicability of the cell model to the CVP in silica suspension. However, the ~'-potentia! of latex suspensions ordinarily decreases as the particle concentration increases, even after being corrected by the term of (1-r This tendency is especially noticeable in the systems that have particles with high surface charge densities. Furthermore, the conductivity measurements of these suspensions reveal that the conductivity of these systems, especially in their highly charged state, increases as the particle concentration is increased; opposite in tendency to silica suspensions. These new findings can be explained as follows: on the highly charged surface of a latex particle, a polyelectrolyte-like ("hairy") layer is present, which overlaps at some point. This permits interparticle surface conduction and results in the abnormal behavior of CVP in these systems.

show abstract

Section: Introductionmentioning

confidence: 99%

Electrokinetic study on concentrated suspensions using colloid vibration potential measurements

Hozumi

Furusawa

1990

Colloid & Polymer Sci

View full text Add to dashboard Cite

show abstract

“…The ratio of this potential to the distance between two electrodes determines the sedimentation potential. Sedimentation potential is a useful measuring technique for zeta potential analysis in colloidal suspensions and its stability [147] …”

Section: Measurement Of Zeta Potentialmentioning

confidence: 99%

Revisiting Zeta Potential, the Key Feature of Interfacial Phenomena, with Applications and Recent Advancements

et al. 2022

View full text Add to dashboard Cite

Surface of a particle is inevitably charged. When the particle is surrounded by a fluid a potential difference arises between the surface and bulk, called zeta potential (ζ) which controls many interfacial properties of the particle involving in suspension, emulsion, colloid etc. Many phenomena happening around us have at least one step that passes through an interface. Thus, the application of ζ is practically uncountable. Discovered in late 19th century, almost past 120 years, the application of ζ has emerged in many areas to meet the fruitful need of mankind. However, to the best of our knowledge, there is no report disclosed citing the applications at one place as a ready tool for the readers. The present review accumulates extensive survey of literature, bringing out various aspects of ζ in chemistry, engineering, biology, material, and environmental sciences. A brief theoretical background mentioning the principle and practical applications were focused.

show abstract

“…A number of studies [21][22][23][24] of sedimentation under both electrostatic and hydrodynamic particle-particle interactions have been performed using cellular methods to obtain the hydrodynamic component, either with the free-surface boundary condition by Happel [25] or the zero vorticity condition by Kuwabara [26]. While experimental results confirm the cell models as adequate to calculate the sedimentation potential [27], both the method by Happel and that of Kuwabara fail to correctly reproduce the sedimentation behaviour of non-interacting particles in the dilute limit found by Batchelor about 14 years after the introduction of the method [9,25,26]. Furthermore, cellular methods cannot take into account changes in the RDF of the sedimenting suspension induced by the electrostatic interactions and they assume an electrically neutral unit cell, which may be a too rough simplification if Debye layers overlap strongly [28].…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic simulations of sedimenting dilute particle suspensions under repulsive DLVO interactions

Jung¹,

Uttinger²,

Peukert³

et al. 2022

Soft Matter

View full text Add to dashboard Cite

show abstract

Sedimentation potential in aqueous electrolytes

Cited by 21 publications

References 5 publications

Electrokinetic study on concentrated suspensions using colloid vibration potential measurements

Electrokinetic study on concentrated suspensions using colloid vibration potential measurements

Revisiting Zeta Potential, the Key Feature of Interfacial Phenomena, with Applications and Recent Advancements

Hydrodynamic simulations of sedimenting dilute particle suspensions under repulsive DLVO interactions

Contact Info

Product

Resources

About