Microemulsions are clear, thermodynamically stable, isotropic liquid mixtures of oil, water and surfactant, frequently in combination with a cosurfactant. Pdf interfacial tension and phase behavior of pure surfactant. The study of surfactant phase behavior consists in the determination of the number, composition, and structure of phases formed by surfactant systems at a given set of conditions pressure, temperature, and system composition, in observance of gibbs phase rule. Request pdf interfacial tension and phase behavior of surfactantbrineoil system. Pdf phase behavior and microstructures of nonionic. The aqueous phase drops generated from the nozzle initially rest on the aqueous organic interface before the film ruptures.
Effect of hydrotropes on the aqueous solution behavior of. Controlling the phase behavior of polyion surfactant ion. The aqueous phase behavior of surfactants colloid science robert g. Phase behavior of ionic microemulsions utrecht university. The aqueous phase behavior of surfactants laughlin, robert g. Cosurfactants should be highly insoluble in the aqueous phase and highly. Phase behavior in mixture of cationic and anionic surfactants in aqueous solutions article pdf available in colloid and polymer science 2732. As expected, the merging of the twophase regions, w i. The generality of the aqueous phase fragmentationbased approach permits comparison of systems with different dimensionality and can account for the shift of.
Professor kronberg supervises research in the fields of microemulsions, adsorption of surfactants and polymers, fuel formulations, and polymeric networks. Interfacial tension and phase behavior of surfactantbrineoil system. The aqueous phase behavior of surfactants journal of. On the effect of surfactants on drop coalescence at liquid. Soil bacterial diversity mediated by microscale aqueous. Phase behavior and microstructures of nonionic fluorocarbon surfactant in aqueous systems. Phase behavior of pseudoternary brinealkanealcohol. Aqueous phase behavior of isosorbidebased nonionic surfactants article in colloids and surfaces a physicochemical and engineering aspects 404. In the present work, the aqueous phases containing different ethoxylated. From the piv images it can be seen that during this resting period, the liquid inside the droplet is motionless prior to the. Phase is any part of a system that is uniform in physical state, chemical composition, and internal structure. Pdf the aqueous phase behavior of surfactants colloid.
Windows phone 7 would receive two more updates, tango and 7. The gibbs phase diagram, however, is an empirical visual observation of the state of the. The aqueous phase behavior of surfactants robert g. The author describes the elements of thermodynamics and phase science which help determine the behavior of surfactants in both the binary aqueous and ternary systems involving an electrolyte or an oil. Surfactant chemistry and general phase behaviour 1. Surface chemistry of surfactants and polymers wiley. Request pdf effect of hydrotropes on the aqueous solution behavior of surfactants aqueous solutions of surfactantscationic. The aqueous phase behavior of surfactants colloid science. A detailed discussion of the phase behavior and properties of microemulsion.
The rupture behavior of the droplets at different surfactant concentrations is first analyzed. We describe an example in which the electrostatic potential decreases with separation. He has published over 80 papers in the field and is a coauthor of the book surfactants and polymers in aqueous solution. Pdf phase behavior in mixture of cationic and anionic. Aqueous phase behavior of isosorbidebased nonionic. Phase behavior studies of microemulsion are a very important tool in describing the interaction of an aqueous phase containing surfactant with hydrocarbon.