Micellar Studies of Magnesium Soaps Using Ion-selective Electrode
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L. C. Heda
Abstract
Magnesium soaps of caproic and caprylic acids were prepared and a cell was set up for the measurement of EMF (electromotive force) of the cell containing referred soap solutions in methanol water solvent system with the aid of ion-selective electrode. The critical micelle concentration of soap solutions was determined by plotting the electromotive force of the cell against soap concentration. The critical micelle concentration of these soap solutions varies with increase in chain length of the fatty acids in the soap. The energetic studies of the system have been carried out from the electromotive force values of the cell containing soap solution to ascertain the chain length compatibility and agglomeration profile. The values of free energy change are negative indicating the spontaneity of cell reaction and decreases with increasing soap concentration while increases with the increase methanol concentration in solvent mixture.
Kurzfassung
Aus Capronsäure und Caprylsäure wurden Magnesiumseifen dargestellt. Mit diesen Seifenlösungen wurde in einem Methanol/Wasser-Lösungssystem eine Zelle zur Messung der EMK (elektromotorische Kraft) dieser Zelle mit Hilfe einer ionenselektiven Elektrode konfiguriert. Durch graphische Darstellung der elektromotorischen Kraft der Zelle gegen die Seifenkonzentration wurden die kritischen Mizellbildungskonzentrationen der Seifenlösungen bestimmt, die mit zunehmender Kettenlänge der Fettsäurenseifen variieren. Die energetischen Untersuchungen des Systems erfolgten durch die EMK-Werte der seifenhaltigen Zelle, um die Kettenlängenkompatibilität und die Agglomerationsform zu bestimmen. Die negative Änderung der freien Energie weist auf eine spontane Zellenreaktion hin, die mit Erhöhung der Seifenkonzentration abnimmt, während sie mit Erhöhung der Methanolkonzentration in der Lösungsmittelmischung zunimmt.
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© 2008, Carl Hanser Publisher, Munich
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Application
- Synthesis of an Imidazoline Phosphate Surfactant and its Application on Corrosion Inhibition
- Properties of Oxyethylenated Fatty Acid Methyl Esters and Ethyl Esters; Hydrolysis, Critical Micelle Concentrations and Foaming
- Effect of Nano and Micro Emulsion Silicone Softeners on Properties of Polyester Fibers
- Novel Surfactants
- Synthesis, Characterization and Surface Active Properties of Imidazolinium Surfactant Derived from Oleic Acid and Diethylenetriamine
- Physical Chemistry
- Micellization of Cetyltributylphosphonium Bromide in some Binary Aqueous Solvents Mixtures
- Micellar Studies of Magnesium Soaps Using Ion-selective Electrode
- Influence of the Cross-sectional Geometry on Wettability and Cleanability of Polyester Woven Fabrics
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Application
- Synthesis of an Imidazoline Phosphate Surfactant and its Application on Corrosion Inhibition
- Properties of Oxyethylenated Fatty Acid Methyl Esters and Ethyl Esters; Hydrolysis, Critical Micelle Concentrations and Foaming
- Effect of Nano and Micro Emulsion Silicone Softeners on Properties of Polyester Fibers
- Novel Surfactants
- Synthesis, Characterization and Surface Active Properties of Imidazolinium Surfactant Derived from Oleic Acid and Diethylenetriamine
- Physical Chemistry
- Micellization of Cetyltributylphosphonium Bromide in some Binary Aqueous Solvents Mixtures
- Micellar Studies of Magnesium Soaps Using Ion-selective Electrode
- Influence of the Cross-sectional Geometry on Wettability and Cleanability of Polyester Woven Fabrics
