Zimin, D. and Craig, V. S. J. and Kunz, Werner (2004) Adsorption pattern of mixtures of trimethylammonium-modified hydroxyethylcellulose and sodium dodecyl sulfate at solid-liquid interfaces. LANGMUIR, 20 (6). pp. 2282-2291. ISSN 0743-7463
Full text not available from this repository. (Request a copy)Abstract
We studied mixtures of aqueous solutions of cationic hydroxyethylcellulose JR400 polymer and anionic sodium dodecyl sulfate using dynamic light scattering and atomic force microscopy (AFM). A ternary phase diagram was established showing three interesting realms of the polymer-surfactant-water mixture: a preprecipitation area of lowered viscosity (polymer excess) compared to the pure polymer solution, a postprecipitation area (resolubilization at surfactant excess), and highly diluted samples with a stoichiometrical surfactant-polymer ratio close to that of maximum precipitation. Samples with various compositions representing these areas were imaged by atomic force microscopy on mica and on hydrophobically modified silica in contact mode. A correlation between light scattering data concerning particle size and, more important, structuring in the bulk on one hand and AFM images on the other hand was observed. It was revealed that the influence of surface properties is of less importance for adsorption, compared to the influence of the mixture in the bulk, provided that the mixture is prepared prior to adsorption.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ATOMIC-FORCE MICROSCOPY; OPPOSITELY CHARGED SURFACTANTS; ANIONIC SURFACTANT; CATIONIC POLYMER; CELLULOSE; SYSTEMS; POLYELECTROLYTE; LAYERS; VISCOELASTICITY; NONEQUILIBRIUM; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > Prof. Dr. Werner Kunz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 26 Jul 2021 08:24 |
| Last Modified: | 26 Jul 2021 08:24 |
| URI: | https://pred.uni-regensburg.de/id/eprint/37871 |
Actions (login required)
 |
View Item |
