| Autor: |
Hiroyuki Ohshima |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Fluids, Vol 9, Iss 9, p 203 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2311-5521 |
| DOI: |
10.3390/fluids9090203 |
| Popis: |
A theoretical framework is established for the gel diffusiophoresis of a spherical colloidal particle moving through an uncharged dilute porous polymer gel medium when an electrolyte concentration gradient field is applied. The network of cross-linked polymer segments is treated as a porous skeleton containing an electrolyte solution using the Brinkman–Debye–Bueche model. We derive a general expression for the gel-diffusiophoretic mobility of a charged spherical colloidal particle. Based on this general mobility expression, we farther derive a closed-form approximate expression for the gel-diffusiophoretic mobility of a weakly charged spherical particle correct to the second order of the particle’s zeta potential. The obtained mobility expression depends on the Debye–Hückel parameter and the Brinkmann parameter. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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