97 citations · 133 across the 16 of their papers we have counts for
16 papers
Turbidimetric evaluation of the solubilization rate: dissolution of dodecane nanodrops in 7.5 mM sodium dodecylsulfate solutions at selected sodium chloride concentrations
Jose Daniel Rodriguez, Maurice Espinoza, Kareem Rahn-Chique +1
The rate of micelle solubilization (SR) can be appraised following the decrease of the radius of a macroscopic drop of oil in contact with a surfactant solution [Todorov, 2002]. Al…
Electric surface potential of dodecane nano-drops in aqueous solutions of low ioinic strength
Daniela Diaz, Kareem Rahn-Chique, German Urbina-Villalba
While the surface charge of solid particles is a direct consequence of their synthesis, the one of suspended oil drops depends on the adsorption equilibrium of the surrounding mole…
Influence of surfactant crystallization on the aggregation rate of dodecane-in-water nanoemulsions. Changes in the viscosity of the external phase
Daniela Diaz, Kareem Rahn-Chique, Neyda Garcia-Valera +1
Rates of aggregation of dodecane-in-water (d/w) nanoemulsions stabilized with 7.5 mM sodium dodecylsulfate (SDS) are evaluated beyond 500 mM NaCl. As in the case of hexadecane-in-w…
Use of two-particle simulations for the evaluation of the flocculation rate in the case of insurmountable repulsive barriers
German Urbina-Villalba
The interaction potential between two colloidal particles typically spans a few nanometers. Hence the correct appraisal of the potential in simulations requires very short time ste…
Use of the theory of Lifshitz-Slyosov-Wagner for the evaluation of the aqueous solubility of dodecane
Loredana Espinoza, Kareem Rahn-Chique, Issarly Rivas +1
The solubility of dodecane was determined using the theory of Lifshitz-Slyosov-Wagner for the Ostwald ripening phenomenon. For this purpose, a set of dodecane in water nanoemulsion…
Theoretical Prediction and experimental measurement of the mixed flocculation/coalescence rate of ionic Hexadecane-in-water nano-emulsions
German Urbina-Villalba, Neyda Garcia-Valera, Kareem Rahn-Chique
Theoretical calculations of the mixed aggregation/coalescence (kFC) rate corresponding to a set of hexadecane-in-water nano-emulsions stabilized with sodium dodecyl sulphate (SDS)…
Correct Use of the Lifshitz-Slyosov-Wagner Expression for the Calculation of the Average Radius of an Oil-In-Water (o/w) Emulsion Subject to Coalescence
Kareem Rahn-Chique, German Urbina-Villalba
The analytic expression proposed by Lifshitz-Slyozov and Wagner (LSW theory) for the linear variation of the cube average radius (R3) of an emulsion as function of time (t) is comm…
Phase Behavior and Emulsion Stability of the Aot/Decane/ Water/NaCl System at Very Low Volume Fractions of Oil
Yithanllili Bastidas, Lisset Hernaandez, Issarly Rivas +2
The stability of a ternary system composed of decane/water/Aerosol-OT and salt is revisited. Phase diagrams and emulsions similar in composition to those previously studied by Hofm…
Influence of Creaming and Ripening on the Aggregation Rate of Non-Ionic Dodecane-in-Water Nanoemulsions
Eliandreiina Cruz-Barrios, German Urbina-Villalba
The possible influence of creaming during the measurement of the aggregation rate of dodecane-in-water nanoemul- sions stabilized with Brij 30 is explored. For this purpose additio…
A Novel Algorithm for the Estimation of the Surfactant Surface Excess at Emulsion Interfaces
German Urbina-Villalba, Sabrina Di Scipio, Neyda Garcia-Valera
When the theoretical values of the interfacial tension -resulting from the homogeneous distribution of ionic surfactant molecules amongst the interface of emulsion drops- are plott…
Influence of ripening and creaming on the aggregation rate of dodecane-in-water nanoemulsions. Is the creaming rate an appropriate measure of emulsion stability?
Yorlis Mendoza, Kareem Rahn-Chique, Antonio M. Puertas +2
The behavior of four oil-in-water (O/W) ioinic nanoemulsions composed of dodecane, and mixtures of dodecane with squalene and tetra-chloro-ethylene is studied. These nanoemulsions…
Influence of the time-dependent surfactant adsorption on the lifetime of a drop pressed by buoyancy against a planar interface
Clara Rojas, Maximo Garcia-Sucre, German Urbina-Villalba
Emulsion Stability Simulations (ESS) of deformable droplets are used to study the influence of the time-dependent adsorption on the coalescence time of a 200-m drop of soybean o…
Short-time Evolution of Alkane-in-Water Nanoemulsions
German Urbina-Villalba, Kareem Rahn-Chique
The stability of alkane-in-water nanoemulsions during the sub-stationary regime is studied by means of Emulsion Stability Simulations (ESS). The effects of Ostwald ripening, floccu…
Nanoemulsion stability: experimental evaluation of the flocculation rate from turbidity measurements
Kareem Rahn-Chique, Antonio M. Puertas, Manuel S. Romero-Cano +2
The coalescence of liquid drops induces a higher level of complexity compared to the classical studies about the aggregation of solid spheres. Yet, it is commonly believed that mos…
Lifetime of oil drops pressed by buoyancy against a planar interface: Large drops
Clara Rojas, Máximo García-Sucre, Germán Urbina-Villalba
In a previous report [10] it was shown that emulsion stability simulations are able to reproduce the lifetime of micrometer-size drops of hexadecane pressed by buoyancy against a p…
Lifetime of micrometer-sized drops of oil pressed by buoyancy against a planar interface
Clara Rojas, German Urbina-Villalba, Maximo Garcia-Sucre
Emulsion Stability Simulations (ESS) are used to estimate the coalescence time of one drop of hexadecane pressed by buoyancy against a planar water/hexadecane interface. In the pre…