نتایج جستجو برای: liquid dispersion

تعداد نتایج: 277149  

2012
Emeline Lobry Christophe Gourdon Nathalie Le Sauze Catherine Xuereb Thierry Lasuye

The aim of this paper is to investigate the influence of physico-chemical parameters on liquid–liquid dispersion at high dispersed phase concentration in Sulzer SMV mixer. Four different oil-in-water systems involving two different surfactants are used in order to evaluate the effect of interfacial tension, densities and viscosities ratio on mean droplets size diameters. Moreover the influence ...

2011
M. RAJESWARI SURAJIT DHARA K. VENU V. S. S. SASTRY R. DABROWSKI

Frequency dispersion studies on proton spin-lattice relaxation rates of a liquid crysal (4’-octyloxy-4-cyanobiphenyl) embedded in Aerosil matrix show significant increase at low frequencies (sub-MHz regime) relative to the bulk sample, and are interpreted as primarily due to slow reorientations near the surface ordered layers mediated by translation displacements. The computed exponent in the p...

Journal: :Scientific reports 2015
Yazi Liu Dan Sun Sadegh Askari Jenish Patel Manuel Macias-Montero Somak Mitra Richao Zhang Wen-Feng Lin Davide Mariotti Paul Maguire

A facile method to synthesize a TiO2/PEDOT:PSS hybrid nanocomposite material in aqueous solution through direct current (DC) plasma processing at atmospheric pressure and room temperature has been demonstrated. The dispersion of the TiO2 nanoparticles is enhanced and TiO2/polymer hybrid nanoparticles with a distinct core shell structure have been obtained. Increased electrical conductivity was ...

2005
V. Popa-Nita

We examine surface modes at the nematic-isotropic interface in polymer-liquid-crystal mixtures using the dynamical Landau-de Gennes model for the orientational (non-conserved) order parameter coupled with Cahn-Hilliard equation for concentration (conserved order parameter) and with hydrodynamic degrees of freedom. The generalized dispersion relation is obtained and analyzed in particular cases....

2004
Kevin D. Seibert

A statistical mechanical simulation was developed and used to predict the macroscopic and microscopic behavior of fluidized beds. In particular, the model was used to study structural phenomena in liquid fluidized beds that contain a distribution of particle sizes and/or densities. Bed structural phenomena, such as density-based and sizebased segregation, classification, expansion, inversion, a...

2004
D. Ramkrishna

Liquid-liquid dispersions are commonly used for separations and reaction systems, because the added interfacial area due to dispersion aids in mass transfer and chemical reaction rates. Transient coalescence experiments have been performed for a wide range of dispersed-phase fractions and impeller speeds. A similarity transformation of the experimental drop-size distribution is possible for mos...

2008
Jerry Westerweel

We built up an experiment to study liquid-liquid dispersions in a turbulent Taylor-Couette flow, produced between two counterrotating coaxial cylinders, of radii ri = 100mm and ro = 110mm (gap ratio η = ri/ro = 0.909). The useful length is L = 185mm. There is a space of 10mm between the cylinders bottom ends and a free surface on the top. The cylinders rotation rates ωi and ωo can be set indepe...

2017
Emeline Lobry Thierry Lasuye Christophe Gourdon Catherine Xuereb

Suitable to perform liquidliquid dispersion of controlled mean droplet

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