Conductivity and Debye Length in Aerosol‐OT Hexane/Liquid Paraffin Solutions

Abstract

Aerosol-OT / Debye Lange / Leitfdhiqkeit / LosunqenA new equation was derived for the calculation of the Debye length from conductance measurements in non-polar media, taking into account the existence of triple ions. Measurements were carried out for the system dioctyl sodium sulfosuccinate (Na-AOT) in hexane and liquid paraffin. With the equation the Debye length can also be calculated for viscous solvents (liquid paraffin) even when the concentration of Na-AOT is too small for the conductivity to be measured. IntroductionKnowledge of the state of agglomeration of particles dispersed in non-polar liquid media is important to various practical systems e.g. photoemulsions, paints, waste kerosene and drug suspensions [1][2][3][4].By application of the Derjaguin, Landau, Verwey, Overbeek (DL Va) theory [5,6] the interaction energies between particles can be calculated. Taking interactionjorees instead of energies [4] allows for comparison of the Van der Waals and Coulomb forces with gravitational and shear forces, thus opening the Ber.

A Study of the Micellization of Zirconyl 2-Ethyl Hexanoate via Small-Angle Neutron and X-ray Scattering

“…The formation of inverse micelles in nonpolar media has been investigated by a number of researchers. − However, the surfactants studied have generally been well-characterized surfactants that are known to form micelles. Previous techniques used to investigate the properties of micelle-forming systems include conductivity measurements, − viscometry, − small-angle neutron scattering, , and light scattering. ,− Ideal surfactants such as Aerosol OT were used in these cases. Fluorescence spectroscopy using a probe species, such as a dye, was also used to study the core of inverse micelles. ,,− However, the exact nature of the influence of the dye molecule on the structure of the micelles leaves a question over this “disruptive” technique .…”