General Patterns of the Phase Behavior of Mixtures of HzO , Nonpolar Solvents , Amphiphiles , and Electrolytes . 2 305
نویسنده
چکیده
In part 1 of this series (ref 1) we presented a qualitative thermodynamic description of the phase behavior of quaternary mixtures of water, nonpolar solvents, nonionic amphiphiles, and salts. The phase behavior of such mixtures follows general patterns that are essentially determined by the phase diagrams of the corresponding binary and ternary mixtures. In this paper (part 2) the nonionic amphiphiles are replaced by ionic amphiphiles. The general patterns of these mixtures, in particular the phase sequence with rising temperature, are inverse to those with nonionic amphiphiles? It is shown that this inverse behavior originates from the difference between the phase diagrams of binary H20-nonionic amphiphile and those of H20-ionic amphiphile mixtures.
منابع مشابه
Dominant Association Species in Binary Mixtures of Methanol, Ethanol and Propanol in Nonpolar Solvents
The molecular associations in the binary mixtures of (methanol/solvent), (ethanol/solvent) and (propanol/solvent) were studied using NMR, FTIR and VLE data at different temperatures. The activity coefficients as the most important quantities representing the mixture deviation form ideal behavior were evaluated by using various association models to express the physical and chemical contribution...
متن کاملA density-functional approach to nucleation in micellar solutions
We present a density-functional theory for binary mixtures of amphiphiles with solvent, placing particular emphasis on the structure and free energy of stable and metastable clusters of amphiphiles in dilute solution. These correspond to micelles ~complexes of amphiphiles with the solvophobic groups clustered in the interior! and vesicles ~spherical complexes with bilayer membranes of amphiphil...
متن کاملGroup Contribution Method for Predicting the Phase Behavior of Binary Mixtures Containing Carbon Dioxide
متن کامل
Compositional Modeling of Wax Formation in Petroleum Mixtures
Heavy organics deposition is a common problem in oil industry, especially in oil production, transportation and processing. Wax or solid paraffin series are examples of heavy organics that deposit. Precipitation and crystallization of wax causes major difficulties in different processes. Based on multi-solid theory, a basic model is modified in this paper for wax precipitation in different oils...
متن کامل