Interaction kinetics of anionic surfactants with cationic vesicles

Aqueous dispersions of a commercial esterquat-type surfactant widely used in fabric softeners were rheologically characterized. While at 4 wt % esterquat concentration, a Newtonian response was observed; non-Newtonian (Sisko) flow behavior and viscoelastic properties were found at 12 wt % and higher concentrations. The onset of nonlinear viscoelasticity in oscillatory shear provided interesting information on the strength of quiescent surfactant aggregates. Mechanical spectra corresponded to the plateau zone and the onset of the transition zone. The plateau modulus and the characteristic slopes of the relaxation spectra depended on the strength of the interactions among the aggregates. Start-up at the inception of the shear experiments were carried out to obtain information on the time-dependent shear behavior. Cryo-SEM micrographs demonstrated the occurrence of a dispersion of vesicles embedded into a bilayer matrix.

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Nanovesicle formation and microstructure in aqueous ditallowethylesterdimethylammonium chloride (DEEDMAC) solutions

Basavaraj

McFarlane

Lynch

et al. 2014

Journal of Colloid and Interface Science

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Interaction kinetics of anionic surfactants with cationic vesicles

Cited by 3 publications

References 13 publications

A Cursory Glance at the Phyiscochemical Properties of Oppositely Charged Surfactants in Solution and at the Air–Water Interface

A Cursory Glance at the Phyiscochemical Properties of Oppositely Charged Surfactants in Solution and at the Air–Water Interface

Rheological Behavior and Structure of a Commercial Esterquat Surfactant Aqueous System

Nanovesicle formation and microstructure in aqueous ditallowethylesterdimethylammonium chloride (DEEDMAC) solutions

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