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A model on the temperature dependence of critical micelle concentration
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2004Abstract An equation, which describes the dependence of critical micelle concentration (XCMC) with temperature, has been derived on the basis of Δ G 0 =−RT ln K , linear behavior of the enthalpy of micellization with temperature, and compensation phenomena in which the enthalpy and the entropy of micellization change linearly with ...
Hong-Un Kim, Kyung-Hee Lim
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Spectrophotometric determination of the critical micelle concentration of surfactants
Journal of Colloid and Interface Science, 1972Abstract The “Beer's law curves” for aqueous solutions of two typical surface-active azo dyes and two typical colorless surfactants (hexadecyltrimethylammonium bromide and hexadecylpyridinium bromide), when plotted up to relatively high concentrations 0.005–0.05 M (using very short path length cuvettes) reveal a normal type of deviation towards the
Charles H. Giles, D.G Duff
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A Simplified Method for the Determination of Critical Micelle Concentration
Journal of Chemical Education, 2001A simple and suitable method for the determination of critical micelle concentration of surfactants is described. The experiment was adapted from a traditional method and aims to familiarize undergraduate students with micellar solutions of amphiphilic molecules, versatile compounds exhibiting a wide range of applications. Surface tension is determined
José Kovensky +3 more
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Determination of Critical Micelle Concentration of Macroemulsions and Miniemulsions
Langmuir, 1998Critical micelle concentrations (cmc's) of macroemulsion (styrene + SDS + water) and miniemulsion (styrene + DMA + SDS + water + NaHCO3) solutions are determined by a conductance technique. A four-terminal cell and an impedance spectrometer are employed in this work. An equivalent circuit of the sample cell is determined, and the solution resistance is
Yi-Yung Lin +3 more
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Detergent application of the measurement of critical micelle concentration [PDF]
Journal of the American Oil Chemists' Society, 1958 SummaryThe measurement of critical micelle concentration is discussed from the viewpoint of practical detergent application. Micelles are briefly characterized, and methods for measurement are discussed. The difficulties of measuring nonionic surfactant critical concentrations is indicated, and several applicable methods are described.
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Determination of Critical Micelle Concentration by Electrochemical Means
Analytical Letters, 2006Overview of electrochemical methods for critical micelle concentration (cmc) determination is given. The principles and examples of cmc determination by conductometry, potentiometry, tensammetry, polarography, voltammetry, electrophoresis, and isotachophoresis are reviewed and discussed.
Karel Nesměrák, Irena Němcová
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Determination of critical micelle concentration with the rotating sample system
Analytical and Bioanalytical Chemistry, 2008A novel experimental approach using the rotating sample system (RSS) is proposed here for the determination of the critical micelle concentration (CMC) of surfactants. The RSS has been conceived in our laboratory as a convection platform for physicochemical studies and analyses in microliter-sized sample drops.
Gautam N. Shetty +2 more
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High-throughput evaluation of the critical micelle concentration of detergents
Analytical Biochemistry, 2011Determination of the critical micelle concentration (CMC) value of detergents routinely used in biological applications is necessary to follow possible changes due to different buffer compositions (e.g., temperature, pH) such as those in solutions that are used for protein activity assays or crystallization. Here we report a method to determine the CMC
Robert K. Ernst +5 more
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Surfactant Diffusion Near Critical Micelle Concentrations
Journal of Solution Chemistry, 2002Taylor dispersion and differential refractometry are used to measure mutual diffusion coefficients (D) for binary aqueous solutions of octylglucopyranoside, dodecylsulfobetaine, and sodium dodecyl sulfate (nonionic, zwitterionic and ionic surfactants, respectively).
Derek G. Leaist +2 more
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The Critical Micelle Concentration of Asphaltenes As Measured by Calorimetry
Energy & Fuels, 1999Micellization of asphaltenes in solution has been investigated using a micro calorimetric titration procedure (Andersen, S. I.; Birdi, K. S. J. Colloid Interface Sci. 1991, 142, 497). The method uses the analysis of heat of dissociation and dilution of asphaltene micelles when a pure solvent (or solvent mixture) is titrated with a solution of ...
Steen D. Christensen +1 more
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