Shear and longitudinal viscosity of non-ionic C12E8 aqueous solutions

Article Abstract:

The measurements of steady shear viscosity (eta(sub 8)(super 0)), longitudinal elastic modulus (M'), and ultrasonic absorption (alpha) in the one-phase isotropic liquid region of the non-ionic surfactant C12E8 aqueous solutions are presented. In the surfactant-rich region viscoelasticity and glass-like properties govern the behavior of the solutions and an additional low-frequency contribution is ascribed to the exchange of water molecules and/or surfactant monomers between the aggregates and the bulk solvent region.

Viscosity, Aqueous solution reactions

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Dissipative particle dynamics simulation of phase behavior of aerosol OT/water system

Article Abstract:

An investigation on the phase behaviors of the binary mixture of an anionic surfactant aerosol OT (AOT) and water is conducted on a mesoscopic level using dissipative particle dynamics (DPD) computer simulations. It is proposed that the anomalous lamellar phenomena at intermediate AOT concentration are due to the formation of a defective structure, pseudoreversed hexagonal phase, which evidently decreases the water diffusivity.

Water, Thermal properties, Dynamics of a particle, Particle dynamics

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