Structure of weakly charged polyelectrolytes at a solid-liquid interface
| Autor: | R. Varoqui |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
chemistry.chemical_classification
Range (particle radiation) Physics and Astronomy (miscellaneous) Chemistry Stereochemistry General Engineering Charge density Polymer Atomic and Molecular Physics and Optics Polyelectrolyte Condensed Matter::Soft Condensed Matter Adsorption Polyelectrolyte adsorption Chemical physics Intramolecular force Monolayer Physics::Chemical Physics |
| Zdroj: | Journal de Physique II. 3:1097-1108 |
| ISSN: | 1286-4870 1155-4312 |
| DOI: | 10.1051/jp2:1993186 |
| Popis: | The equilibrium structure of a monolayer formed by long polyelectrolyte chains adsorbed at the interface between a charged surface and a dilute polyelectrolyte solution is analysed. The self-consistent field equations for the configurational probability of the chain are solved numerically for different parameter values of the system including the surface and polymer charge density, the amount of adsorption and the Debye-huckel screening length. The effect of intramolecular long range Coulombic forces on the segment density profile is examined. By coupling the numerical results with simple thermodynamic arguments, exact analytical expressions are obtained for the layer thickness and define critical adsorption conditions. In general, polyelectrolytes are adsorbed into flat layers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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