Aggregation behaviour of sodium dodecyl sulphate micelles in aqueous solutions studied by membrane osmometry

1980 ◽  
Vol 76 (0) ◽  
pp. 2035 ◽  
Author(s):  
Kulbir S. Birdi ◽  
Søren U. Dalsager ◽  
Sune Backlund
Keyword(s):  
Aqueous Solutions ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Aggregation Behaviour

scholarly journals Electrokinetic Properties of Cassiterite and Quartz Particles in the Presence of Cationic, Anionic and Non-ionogenic Surfactants

1994 ◽  
Vol 11 (3) ◽  
pp. 161-174 ◽  
Author(s):  
Fouad Taha ◽  
M.B. Saleh ◽  
K.M.E. Attyia ◽  
M.M.R. Khalaf
Keyword(s):  
Aqueous Solutions ◽  
Surface Charge ◽  
Sodium Dodecyl Sulphate ◽  
Primary Amine ◽  
Negative Charge ◽  
Sodium Dodecyl ◽  
Amine Hydrochloride ◽  
Solution Properties ◽  
Zeta Potentials ◽  
Isoelectric Points

The surface charge properties of cassiterite and quartz particles in primary amine hydrochloride, sodium oleate, sodium dodecyl sulphate, phenyl disodium orthophosphate, 4-nitrophenyl disodium orthophosphate and starch solutions have been monitored using particle microelectrophoresis. The zeta potentials of the oxides and their isoelectric points (IEPs) were determined as a function of pH in the presence of different surfactant concentrations. In general, cassiterite and quartz particles acquired a negative charge in the various aqueous solutions and were dramatically influenced by both pH and the presence of surfactants. The magnitude of the surface charge varied considerably and could adopt positive or negative values. The IEPs also varied depending on the solution properties.

scholarly journals Bubble Rise Velocity and Surface Mobility in Aqueous Solutions of Sodium Dodecyl Sulphate and n-Propanol

Minerals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 743
Author(s):  
Pavlína Basařová ◽  
Yuliya Kryvel ◽  
Jakub Crha
Keyword(s):  
Surface Tension ◽  
Aqueous Solutions ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Bubble Surface ◽  
Rise Velocity ◽  
Bubble Rise ◽  
Spherical Bubble ◽  
Surface Mobility ◽  
Bubble Rise Velocity

Aqueous solutions of simple alcohols exhibit many anomalies, one of which is a change in the mobility of the bubble surface. This work aimed to determine the effect of the presence of another surface-active agent on bubble rise velocity and bubble surface mobility. The motion of the spherical bubble in an aqueous solution of n-propanol and sodium dodecyl sulphate (SDS) was monitored by a high-speed camera. At low alcohol concentrations (xP < 0.01), both the propanol and SDS molecules behaved as surfactants, the surface tension decreased and the bubble surface was immobile. The effect of the SDS diminished with increasing alcohol concentrations. In solutions with a high propanol content (xP > 0.1), the SDS molecules did not adsorb to the phase interface and thus, the surface tension of the solution was not reduced with the addition of SDS. Due to the rapid desorption of propanol molecules from the bottom of the bubble, a surface tension gradient was not formed. The drag coefficient can be calculated using formulas for the mobile surface of a spherical bubble.

Interaction of Sodium Dodecyl Sulphate and Dimethyl-Dodecyl-Amine Oxide in Aqueous Solutions

1989 ◽  
pp. 431-441 ◽  
Author(s):  
J. Sánchez Leal ◽  
X. Domingo ◽  
F. Comelles ◽  
M. T. García ◽  
A. Casaña
Keyword(s):  
Aqueous Solutions ◽  
Sodium Dodecyl Sulphate ◽  
Amine Oxide ◽  
Sodium Dodecyl ◽  
Dodecyl Amine

Conformational transition of polyvinylpyrrolidone in aqueous solutions of sodium dodecyl sulphate

1988 ◽  
Vol 24 (5) ◽  
pp. 493-496 ◽  
Author(s):  
Teresa García López de Sa ◽  
JoséL. Allende Riaño ◽  
Luis M. Garrido
Keyword(s):  
Aqueous Solutions ◽  
Sodium Dodecyl Sulphate ◽  
Conformational Transition ◽  
Sodium Dodecyl

scholarly journals The electrical conductivities of aqueous solutions of sodium dodecyl sulphate and sodium hexadecyl sulphate at different temperatures

1936 ◽  
Vol 155 (885) ◽  
pp. 386-406 ◽  
Keyword(s):  
Electrical Conductivity ◽  
Molecular Weight ◽  
Aqueous Solutions ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Classical Work ◽  
Electrical Conductivities ◽  
Other Substances ◽  
Different Temperatures ◽  
Great Advance

The classical work of McBain on the electrical conductivity and other properties of aqueous solutions of the soaps led him to postulate the formation of the ionic micelle. This aggregate of ions has a greater mobility than that of the ions composing it, and its formation accounts for the characteristic increase in conductivity exhibited by colloidal electrolytes. The conception has resulted in great advance in the study of all classes of colloidal electrolytes e. g ., protein and gelatine salts, dyes, and other substances of high molecular weight.

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