6533b7d9fe1ef96bd126b9ea
RESEARCH PRODUCT
Electrophoresis of colloidal dispersions in the low-salt regime
Christian HolmBurkhard DünwegVladimir LobaskinThomas PalbergMartin Medebachsubject
ElectrophoresisQuantitative Biology::BiomoleculesDrift velocityMaterials scienceLatexGeneral Physics and AstronomyIonic bondingCharge densityFOS: Physical sciencesCondensed Matter - Soft Condensed MatterElectrostaticsElectric chargeChemistry Techniques AnalyticalCondensed Matter::Soft Condensed MatterColloidElectrophoresissymbols.namesakeModels ChemicalChemical physicssymbolsSoft Condensed Matter (cond-mat.soft)Computer SimulationSaltsColloidsDebyedescription
We study the electrophoretic mobility of spherical charged colloids in a low-salt suspension as a function of the colloidal concentration. Using an effective particle charge and a reduced screening parameter, we map the data for systems with different particle charges and sizes, including numerical simulation data with full electrostatics and hydrodynamics and experimental data for latex dispersions, on a single master curve. We observe two different volume fraction-dependent regimes for the electrophoretic mobility that can be explained in terms of the static properties of the ionic double layer.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-04-26 |