نتایج جستجو برای: cosolvent water mixtures
تعداد نتایج: 593698 فیلتر نتایج به سال:
Solubility data of recalcitrant contaminants in cosolvents is essential to determine their potential applications in enhanced soil remediation. The solubilities of phenanthrene, anthracene, fluoranthene and benzo[a]pyrene in ethyl lactate/water and ethanol/water mixtures were measured using equilibrium techniques. The cosolvency powers derived from solubility data were then applied to the model...
In this paper we report classical Molecular Dynamics and ab initio Density Functional Theory simulations of the structure single particle dynamics ternary mixtures a protic (ethylammonium nitrate, EAN) an aprotic (1-Ethyl-3-methylimidazolium tetrafluoroborate, EMIMBF4) ionic liquid, lithium salts with common anion molecular cosolvent, dimethyl sulfoxide (DMSO). The coordination numbers electric...
Cosolvent effects on the coil–globule transitions in aqueous polymer solutions are not well understood, especially case of amphiphilic cosolvents that preferentially adsorb and lead to both swelling collapse. Although a predominant focus literature has been placed role polymer–cosolvent attractive interactions, our recent work shown excluded-volume interactions (repulsive interactions) can driv...
A cosolvency model to predict the solubility of drugs at several temperatures was derived from the excess free energy model of Williams and Amidon. The solubility of oxolinic acid, an antibacterial drug, was measured in aqueous (water+ethanol) and non-aqueous (ethanol+ethyl acetate) mixtures at several temperatures (20, 30, 35, 40 degrees C). Oxolinic acid displays a solubility maximum in each ...
We investigated the influence of tetrahydrofuran (THF) addition on the structure of poly(1,2-butadiene-b-ethylene oxide) [PB-PEO] micelles in aqueous solution. Our studies showed that while the micelles remained starlike, the micelle core-corona interfacial tension and micelle size decreased upon THF addition. The detailed effects of the reduction in interfacial tension were probed using contra...
In this work, mesostructure evolution of ordered mesoporous carbons (OMCs) from the 2-D hexagonal (space group p6mm) to the discontinuous cubic [Formula: see text], then towards the face-centered cubic lattice [Formula: see text], and finally, to the simple cubic Pm3n is achieved by simply adjusting the cosolvent water content of the mixed solvents water/ethanol in the presence of a reverse non...
Abstract Equilibrium solubility of triclocarban (TCC) expressed in mole fraction 1,4-dioxane and cyclohexane, as well, 19 {cyclohexane (1) + (2)} mixtures, was determined at seven temperatures from T = (288.15 to 318.15) K. Logarithmic TCC these cosolvent mixtures adequately correlated with a lineal bivariate equation function both the composition temperature. Apparent thermodynamic quantities ...
Ligand binding to myoglobin in aqueous solution involves two kinetic components, one extramolecular and one intramolecular, which have been interpreted in terms of two sequential kinetic barriers. In mixed solvents and sub-zero temperatures, the outer barrier increases and the inner barrier splits into several components, giving rise to fast intramolecular recombination. The nature of these bar...
Characterization of liquid-liquid equilibrium (LLE) in system containing ionic liquids (ILs) is important in evaluating ILs as candidates for replacing traditional extraction and separation solvents. Though an increasing amount of experimental LLE data is becoming available, comprehensive coverage of ternary liquid-phase behavior via experimental observation is impossible. Therefore, it is impo...
The water-in-salt concept has significantly improved the electrochemical stability of aqueous electrolytes, and hybridization with organic solvents or ionic liquids further enhanced their reductive stability, enabling cell chemistries up to 150 Wh kg−1 active material. Here, a large design space is opened by introducing succinonitrile as cosolvent in water/ionic liquid/succinonitrile hybrid ele...
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