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Langmuir, 1991
Page 1. Langmuir 1991, 7, 1055-1066 1055 Articles Diffusion-Limited Interpretation of the Inducti... more Page 1. Langmuir 1991, 7, 1055-1066 1055 Articles Diffusion-Limited Interpretation of the Induction Period in the Relaxation in Surface Tension Due to the Adsorption of Straight Chain, Small Polar Group Surfactants: Theory and Experiment ...
Journal of Chemical and Engineering Data, 1986
. Vapor-liquid equilibrium VLE phase compositions were measured for three binary systems of carbo... more . Vapor-liquid equilibrium VLE phase compositions were measured for three binary systems of carbon dioxide with 1,2-dimethoxybenzene, 2-methoxyphenol, or p-cresol at temperatures from 323.15 to 423.15 K and pressures up to 20 MPa. The solubilities of these close-boiling heavy components in the vapor phase were compared over the experimental conditions. Henry's constants were calculated from the isothermal equilibrium data. The temperature effects on the Henry's constants and the solubilities of carbon dioxide in the liquid phase Ž . were discussed. The new phase equilibrium data were correlated by the Soave-Redlich-Kwong SRK , the Ž . Ž . Ž . Ž . Peng-Robinson PR , and the Patel-Teja PT equations of state EOS with the van der Waals vdW one-fluid Ž . mixing rules. The two-parameter k and k vdW mixing rule was found to yield satisfactory results for the a b 12 12 investigated systems. q
Macromolecules, 1984
ABSTRACT
Aiche Journal, 1989
A predictive equation for the mutual diffusion coefficient is developed for binary solutions whic... more A predictive equation for the mutual diffusion coefficient is developed for binary solutions which contain a self-associating component. The solution is modeled as a nonideal multicomponent mixture consisting of the solvent molecules and various association complexes. The model provides for a unique mobility for each of the species present and accounts for both physical and chemical contributions to the solution thermodynamics and their effects on the diffusive fluxes. The predictions of the theory were evaluated for n-alcohols in nonpolar solvents using data for six systems at temperatures ranging from 293 to 363 K. In each case, the predictions of this theory are found to be superior to other currently available methods.
The Journal of Physical Chemistry, 1984
Page 1. 3472 J. Phys. Chem. 1984,88, 3472-3419 contrast to the predictions based on the simple im... more Page 1. 3472 J. Phys. Chem. 1984,88, 3472-3419 contrast to the predictions based on the simple impulsive photo-dissociation model, the peak recoil momentum values po follow a systematic upward trend with increased size ...
Aiche Journal, 1990
Pendant drop tensiometry enhanced by video-image digitization is shown to be a useful tool for th... more Pendant drop tensiometry enhanced by video-image digitization is shown to be a useful tool for the experimental measurement of the relaxation in interfacial tension due to the adsorption of surfactant at a fluid interface. Using this method, profiles of the relaxation in surface tension of a diffusion-controlled, nonionic polyethoxy surfactant were measured. A diffusion coefficient was computed by comparing these profiles with numerical solutions of the bulk surfactant diffusion equation and a Frumkin equilibrium adsorption isotherm. This comparison was made for the entire relaxation period. This method establishes a more reproducible diffusion coefficient than current techniques that utilize only the short- or long-time parts of the relaxation spectrum. In addition, lower bounds on the kinetic constants for the sorption process are inferred for the polyethoxy surfactant used by comparing numerical solutions of mixed diffusion and surface kinetic transfer with the diffusion-limited result.
Langmuir, 1991
Page 1. Langmuir 1991, 7, 1055-1066 1055 Articles Diffusion-Limited Interpretation of the Inducti... more Page 1. Langmuir 1991, 7, 1055-1066 1055 Articles Diffusion-Limited Interpretation of the Induction Period in the Relaxation in Surface Tension Due to the Adsorption of Straight Chain, Small Polar Group Surfactants: Theory and Experiment ...
Journal of Chemical and Engineering Data, 1986
. Vapor-liquid equilibrium VLE phase compositions were measured for three binary systems of carbo... more . Vapor-liquid equilibrium VLE phase compositions were measured for three binary systems of carbon dioxide with 1,2-dimethoxybenzene, 2-methoxyphenol, or p-cresol at temperatures from 323.15 to 423.15 K and pressures up to 20 MPa. The solubilities of these close-boiling heavy components in the vapor phase were compared over the experimental conditions. Henry's constants were calculated from the isothermal equilibrium data. The temperature effects on the Henry's constants and the solubilities of carbon dioxide in the liquid phase Ž . were discussed. The new phase equilibrium data were correlated by the Soave-Redlich-Kwong SRK , the Ž . Ž . Ž . Ž . Peng-Robinson PR , and the Patel-Teja PT equations of state EOS with the van der Waals vdW one-fluid Ž . mixing rules. The two-parameter k and k vdW mixing rule was found to yield satisfactory results for the a b 12 12 investigated systems. q
Macromolecules, 1984
ABSTRACT
Aiche Journal, 1989
A predictive equation for the mutual diffusion coefficient is developed for binary solutions whic... more A predictive equation for the mutual diffusion coefficient is developed for binary solutions which contain a self-associating component. The solution is modeled as a nonideal multicomponent mixture consisting of the solvent molecules and various association complexes. The model provides for a unique mobility for each of the species present and accounts for both physical and chemical contributions to the solution thermodynamics and their effects on the diffusive fluxes. The predictions of the theory were evaluated for n-alcohols in nonpolar solvents using data for six systems at temperatures ranging from 293 to 363 K. In each case, the predictions of this theory are found to be superior to other currently available methods.
The Journal of Physical Chemistry, 1984
Page 1. 3472 J. Phys. Chem. 1984,88, 3472-3419 contrast to the predictions based on the simple im... more Page 1. 3472 J. Phys. Chem. 1984,88, 3472-3419 contrast to the predictions based on the simple impulsive photo-dissociation model, the peak recoil momentum values po follow a systematic upward trend with increased size ...
Aiche Journal, 1990
Pendant drop tensiometry enhanced by video-image digitization is shown to be a useful tool for th... more Pendant drop tensiometry enhanced by video-image digitization is shown to be a useful tool for the experimental measurement of the relaxation in interfacial tension due to the adsorption of surfactant at a fluid interface. Using this method, profiles of the relaxation in surface tension of a diffusion-controlled, nonionic polyethoxy surfactant were measured. A diffusion coefficient was computed by comparing these profiles with numerical solutions of the bulk surfactant diffusion equation and a Frumkin equilibrium adsorption isotherm. This comparison was made for the entire relaxation period. This method establishes a more reproducible diffusion coefficient than current techniques that utilize only the short- or long-time parts of the relaxation spectrum. In addition, lower bounds on the kinetic constants for the sorption process are inferred for the polyethoxy surfactant used by comparing numerical solutions of mixed diffusion and surface kinetic transfer with the diffusion-limited result.