Effect of ion partitioning on electrophoresis of soft particles
| Autor: | Seyed Nezameddin Ashrafizadeh, Ardalan Ganjizade, Arman Sadeghi |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Permittivity
Materials science Polymers and Plastics Charge (physics) 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electric charge Polyelectrolyte 0104 chemical sciences Ion Condensed Matter::Soft Condensed Matter Electrophoresis Colloid and Surface Chemistry Chemical physics Materials Chemistry Electric potential Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Colloid and Polymer Science. 297:191-200 |
| ISSN: | 1435-1536 0303-402X |
| DOI: | 10.1007/s00396-018-04467-1 |
| Popis: | The effect of ion partitioning, a phenomenon significantly affecting the arrangement of ions in an aqueous system due to spatial permittivity variations, on electrophoresis of spherical soft particles is analytically studied. Along with this line, the electric potential is considered small enough to allow applying the Debye-Huckel approximation, and the relaxation effect is neglected. The core is considered to have an arbitrary charge, and the charge of the polyelectrolyte layer is assumed to be homogeneous and independent of the electrolyte properties. The main result of this paper is an analytical expression for electrophoretic mobility, which is validated by comparing the results with the predictions of available analytical solutions valid for limiting conditions. The results indicate that the ion partitioning can significantly increase the electrophoretic mobility of soft particles. The influence of the ion partitioning increases with increasing the polyelectrolyte layer (PEL) friction factor and the electric charge of the core, whereas the opposite is true for the PEL charge. |
| Databáze: | OpenAIRE |
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