The miscibility range for water sodium propionate pentanol mixtures has been determined at 298 K. The phase equilibria are compared with ‘normal’ and ‘ detergentless ’ microemulsion systems. Sodium propionate imposes a very slight salting out action (if any) on pentanol in dilute aqueous solutions. However, pentanol gains full miscibility with concentrated salt solutions. Volumetry was chosen t...

The miscibility of Langmuir monolayers of egg yolk lecithin (eggPC) with n-hexadecanoic acid (PA), 1-hexadecanol (HD), and their equimolar mixture (PA/HD) was investigated thermodynamically and morphologically. Surface pressure (π)-molecular area (A) and surface potential (ΔV)-A isotherms for the binary and ternary systems were measured, employing the Wilhelmy method and the ionizing (241)Am el...

Hydrodynamic instabilities at the interface between two partially miscible liquids impact numerous applications, including CO2 sequestration in saline aquifers. We introduce here a new laboratory-scale model system on which buoyancy- and Marangoni-driven convective instabilities of such partially miscible two-layer systems can easily be studied. This system consists of the stratification of a p...

An efficient use of plasticizers in rubber compounds requires an understanding their miscibility behavior. Besides the chemical properties both and plasticizer, rigidity plasticizer plays important role for miscibility. The is investigated here using glass transition measured by differential scanning calorimetry broadband dielectric spectroscopy (BDS). Additionally, interfacial relaxation phase...

since the pressure of hydrocarbon reservoirs drops due to production, in order to keep the production rate constant or increase enhanced recovery, few methods are used. one of which is gas injection to the reservoir. on the other hand, due to reduction in oil production potential of aghajari oil field, gas injection is highly required to pressurize and enhance oil recovery. there is a possibili...

2014 Microscopical, miscibility and X-ray studies establish the existence of two new mesophases in the two enantiomers of 1 (methyl)-heptyl terephthalidene bis amino cinnamate. In one of this two mesophases the two enantiomers do not exhibit a total miscibility range; while for the second the untwisted form observed with the racemic mixture has a higher temperature range of stability than the t...