Effect of ion partitioning on electrostatics of soft particles with volumetrically charged inner core coated with pH-regulated polyelectrolyte layer
| Autor: | Arman Sadeghi, Seyed Nezameddin Ashrafizadeh, Ardalan Ganjizade |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Polymers Surface Properties Static Electricity 02 engineering and technology Electrolyte 01 natural sciences Ion Electrolytes Colloid and Surface Chemistry 0103 physical sciences Hydroxides Particle Size Physical and Theoretical Chemistry Ions Range (particle radiation) 010304 chemical physics Inner core Charge density Surfaces and Interfaces General Medicine Hydrogen-Ion Concentration 021001 nanoscience & nanotechnology Electrostatics Polyelectrolyte Chemical physics Particle 0210 nano-technology Hydrogen Biotechnology |
| Zdroj: | Colloids and Surfaces B: Biointerfaces. 170:129-135 |
| ISSN: | 0927-7765 |
| DOI: | 10.1016/j.colsurfb.2018.05.053 |
| Popis: | The effect of ion partitioning on the electrostatics of a soft particle with a volumetrically charged core and a pH-dependent polyelectrolyte layer (PEL) is numerically investigated. It is observed that, whenever the ion partitioning is noticeable, the soft layer can be fully charged in a broader range of pH. Besides, a higher number density of the PEL functional groups and a lower charge density of the core result in a sharper dependence of the electric potential on the electrolyte pH. Briefly, we conclude that, since the PEL charge is dependent upon the concentration of the hydroxide/hydrogen ions, for the pH-regulated soft particles, the ion partitioning effect, as a phenomenon influencing the ionic distribution, can be a determinant factor. So taking the effect of the ion partitioning into consideration is strongly recommended for a more realistic description of the electrostatics of the pH-regulated soft particles. |
| Databáze: | OpenAIRE |
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