Leitfähigkeits- und Potentialmessungen an Salzen der höheren Alkylschwefelsäuren

Lottermoser, A.; Püschel, F.

doi:10.1007/bf01433126

Cited by 84 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…62 metric measurements36 as well as older measurements of the effect of temperature on the c.m.c. [37][38][39] show that the heat of micelle formation is small both absolutely and when compared to the standard free energy estimated from experimental data. Hence entropy and not energy must, in fact, be the important driving force for micelle formation.…”

Section: Discussionmentioning

confidence: 86%

Dilute Solutions of Amphipathic Ions. I. Conductivity of Strong Salts and Dimerization

Mukerjee¹,

Mysels²,

Dulin³

1958

J. Phys. Chem.

155

View full text Add to dashboard Cite

The equivalent conductivity of pure sodium lauryl sulfate has been determined from the c.m.c. to the highest accessible dilutions. The A us. < c plot, while almost linear, has a slope which cannot be that of a simple 1 : 1 electrolyte. Qualitative arguments point to the reversible formation of a more conducting dimer LSzby the amphipathic LSion and this hypothesie accounts quantitatively for the available data. The similarly anomalous conductivities of highly dilute solutions of the lithium salt are also in quantitative agreement with this explanation. An important consequence of these findings is that the intermicellar liquid is not formed by monovalent ions but by a mixture of monoand divalent ones. Thus the concentration of simple ions is not e ual to the stoichionietric concentration a t the c.m.c. The reversible formation of the dimer is ascribed to an equilibriumsetween the increasing electrostatic repulsion between the heads and the decreasing interfacial energy as the hydrocarbon tails join.

show abstract

Section: Discussionmentioning

confidence: 86%

Dilute Solutions of Amphipathic Ions. I. Conductivity of Strong Salts and Dimerization

Mukerjee¹,

Mysels²,

Dulin³

1958

J. Phys. Chem.

155

View full text Add to dashboard Cite

show abstract

“…4 The concentration at which this change occurs is dependent upon the chain length of the detergent of a given type and, to a far less extent upon the temperature.' 4 The concentration at which this change occurs is dependent upon the chain length of the detergent of a given type and, to a far less extent upon the temperature.'…”

mentioning

confidence: 99%

“…1 are plotted the absorption spectra at 25.8°C of 1 X 10- 4 solutions of varying concentration with respect to potassium laurate. 1 are plotted the absorption spectra at 25.8°C of 1 X 10- 4 solutions of varying concentration with respect to potassium laurate.…”

mentioning

confidence: 99%

The Determination of Critical Concentrations for the Formation of Soap Micelles by the Spectral Behavior of Pinacyanol Chloride

Corrin

Klevens

Harkins

1946

The Journal of Chemical Physics

102

View full text Add to dashboard Cite

The absorption spectrum of pinacyanol chloride in aqueous solutions of anionic soaps changes sharply to that characteristic of its solutions in organic solvents over a short range of soap concentration. This effect is attributed to the formation of micelles, in whose hydrocarbon-like layers or cores the dye is solubilized. The concentration of soap at which this spectral change occurs is taken as "the critical concentration for the formation of micelles." In water the dye exhibits an absorption band at 5500A which disappears rapidly as the concentration of molecular soap increases. Thus, even 0.00006 molar potassium laurate gives a large effect. At about 0.0126 },If the 'i-band at about 4800A reaches a high intensity, which falls, with further increase of concentration, very rapidly close to the critical concentration. At 2.3 to 2.4 X lO--2 for potassium laurate and 6X lO-3 for the myristate the a-band (ca. 6150A) and the i3-band (ca. 5700A) begin to increase rapidly in intensity and these are considered as the critical concentrations, since these are the prominent bands in the solution of the

show abstract

“…We have measured homogeneous nucleation from alcohol vapors for the homologous series from methanol through n-hexa-no1 between about -5OoC and + 30°C [8,9]. The corresponding surface tension data found in Refs.…”

Section: Introductionmentioning

confidence: 83%

“…The pure liquids were taken from the same lots used previously for nucleation rate experiments [8,9]. No further purification was attempted.…”

Section: Experimental 21 Materialsmentioning

confidence: 99%

Ostwald Ripening of Precipitates I. Numerical Solution for the Particle Size Distribution Function in Closed Systems

Venzl

1983

Ber Bunsenges Phys Chem

View full text Add to dashboard Cite

A numerical solution shows the existence of an asymptotic regime for the Ostwald ripening of precipitates in closed but infinite systems. The asymptotic time evolution is independent of the preparation (initial conditions) and in accord with the predictions of the Lifshitz‐Slyozov‐Wagner‐theory. Diffusion‐limited growth is considered as a representative example. The relation to Kahlweit's approach and the applicability to large but finite systems and more complicated growth laws are discussed.

show abstract

Leitfähigkeits- und Potentialmessungen an Salzen der höheren Alkylschwefelsäuren

Cited by 84 publications

References 0 publications

Dilute Solutions of Amphipathic Ions. I. Conductivity of Strong Salts and Dimerization

Dilute Solutions of Amphipathic Ions. I. Conductivity of Strong Salts and Dimerization

The Determination of Critical Concentrations for the Formation of Soap Micelles by the Spectral Behavior of Pinacyanol Chloride

Ostwald Ripening of Precipitates I. Numerical Solution for the Particle Size Distribution Function in Closed Systems

Contact Info

Product

Resources

About