Adsorption of dodecylhexaoxyethylene glycol monoether at a stationary mercury electrode
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説明
The differential capacity C of a stationary mercury electrode as a function of electrode potential E° and concentration c of dodecylhexaoxyethylene glycol monoether has been measured by the impedance bridge method. A 0.05-M aqueous solution of Na2SO4 was used as a supporting electrolyte. A spline regression model of the experimentally investigated capacity dependence on E° and c has been constructed, giving the possibility to predict C for any potential and surfactant concentration in the interval investigated. The critical micelle concentration for the system studied was found on the basis of the spline model to be 7×10−5 mod dm−3 C12E6. The free energy of adsorption and some other parameters characterising the adsorption of the surface-active agent have been determined.
収録刊行物
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- Journal of Electroanalytical Chemistry and Interfacial Electrochemistry
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Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 171 111-121, 1984-08-01
Elsevier BV