The effect of chemical structure upon the thermodynamics of micellization of model alkylarenesulphonates
| Autor: | G.J Daane, N.M. van Os, T. A. B. M. Bolsman |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
chemistry.chemical_classification
Chromatography Chemistry Sodium Chemical structure Thermodynamics of micellization Entropy driven chemistry.chemical_element Conductance Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Colloid and Surface Chemistry Critical micelle concentration Physical chemistry Counterion Alkyl |
| Zdroj: | Journal of Colloid and Interface Science. 115:402-409 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/0021-9797(87)90056-7 |
| Popis: | Studies of the thermodynamics of micellization of sodium p -( x -decyl)benzenesulphonates in water at temperatures from 15 to 70°C have shown that shifting the benzenesulphonate group toward the middle of the alkyl chain increases the critical micelle concentration (CMC). The process of micellization of these surfactants appears to be entropy driven at low temperature, but energy driven at high temperature. Below the CMC, the change in conductance of these surfactants with temperature is primarily due to the change in viscosity of water; above the CMC, the fraction of counterions participating in the conductance process increases with temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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