Effects of High Salt Concentrations on the Micellization of Octyl Glucoside: Salting-Out of Monomers and Electrolyte Effects on the Micelle−Water Interfacial Tension1
| Autor: | Pasupati Mukerjee and, Chun C. Chan |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Octyl glucoside
chemistry.chemical_classification Aqueous solution Chemistry Inorganic chemistry Surfaces and Interfaces Electrolyte Condensed Matter Physics Micelle chemistry.chemical_compound Monomer Sulfonate Hydrocarbon Electrochemistry Organic chemistry Salting out General Materials Science Spectroscopy |
| Zdroj: | Langmuir. 18:5375-5381 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la020059e |
| Popis: | The effects of two added electrolytes up to high concentrations, 0−4 M NaCl and 0−6.6 M LiCl, on the critical micellization concentration (cmc) of octyl glucoside (OG), a nonionic surfactant, in aqueous solution have been measured. The fluorescence probe 6-p-toluidino-2-naphthalene sulfonate was used to determine the cmc values. Log cmc values were found to vary linearly with the molar electrolyte concentration, CS, up to the highest concentrations. A theoretical approach based on the salting-out of the monomeric chain, presented in 1965, has been expanded by incorporating an additional effect of added electrolytes on the interfacial tension of the micelle−water interface. A group additivity relationship for the salting-out of hydrocarbon chains, also proposed in 1965, has been shown to give a good account of the salting-out coefficients of some hydrocarbons, primary alcohols, and methyl esters of carboxylic acids of different chain lengths obtained from literature data. Salting-out coefficients for the o... |
| Databáze: | OpenAIRE |
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