Dielectric relaxation studies of nitriles solubilized by Sodium dodecyl sulphate in aqueous solutions

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.

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ChemInform Abstract: HETEROCOAGULATION OF GRAPHITIZED CARBON BLACKS IN AQUEOUS SOLUTIONS OF SODIUM DODECYL SULPHATE

Chemischer Informationsdienst ◽

10.1002/chin.197330044 ◽

1973 ◽

Vol 4 (30) ◽

pp. no-no

Author(s):

W. DAVID COOPER ◽

PETER FEARON ◽

GEOFFREY D. PARFITT

Keyword(s):

Aqueous Solutions ◽

Sodium Dodecyl Sulphate ◽

Sodium Dodecyl ◽

Carbon Blacks ◽

Graphitized Carbon

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Enthalpies of adsorption of sodium dodecyl sulphate and O-n-octyltetraethylene glycol from aqueous solutions onto graphitised carbon

Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases ◽

10.1039/f19848000699 ◽

1984 ◽

Vol 80 (3) ◽

pp. 699 ◽

Cited By ~ 12

Author(s):

Michael J. Hey ◽

John W. MacTaggart ◽

Colin H. Rochester

Keyword(s):

Aqueous Solutions ◽

Sodium Dodecyl Sulphate ◽

Sodium Dodecyl

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

Minerals ◽

10.3390/min9120743 ◽

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.

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