Nissan Interaction Parameter Research Articles

The study of thermo-physical properties of binary liquid mixtures of isoamyl alcohol with amines at 298.15–308.15 K

ABSTRACTThe values of density (ρ), viscosity (η) and speed of sound (u) were measured for binary mixtures of 3-methyl-1-butanol (isoamyl alcohol) with n-butylamine (NBA), sec-butylamine (SBA), tert-butylamine (TBA), n-hexylamine (NHA) and n-octyl amine (NOA) over the entire range of mole fractions and at three temperatures (298.15, 303.15 and 308.15 K). From these measurements, the values of excess molar volume(VE), viscosity deviation (∆η), deviation in isentropic compressibility (∆ks), excess Gibbs free energy of activation of viscous flow (G*E) and Grungberg–Nissan interaction parameter (d′) have been calculated. The excess parameter deviations are fitted to Redlich–Kister-type polynomial equation using multi-parametric nonlinear regression analysis to estimate the binary coefficients and standard deviations. The results were discussed in terms of molecular interactions, dipole–dipole interactions and H-bond interactions between unlike molecules. Further, the effects of temperature and amine group in different amines were also studied for the binary mixtures.

Physical-Chemical Properties of Binary Liquid Mixtures of Isoamyl Alcohol with Chloroethanes at 298–308 K

The density (ρ), viscosity (η), and speed of sound (u) were measured for binary mixtures of 3‑methyl-1-butanol(isoamylalcohol) with 1,2-dichloroethane (DCE), 1,1,2-trichloroethane (TCE), and 1,1,2,2-tetrachloroethane (TECE) over the entire range of mole fractions and at temperature 298.15, 303.15, and 308.15 K. From these measurements, the values of excess molar volume (VE), deviation in viscosity (∆η), deviation in isentropic compressibility (∆ks), excess Gibbs free energy of activation of viscous flow (G*E) and Grunberg−Nissan interaction parameter (d ') have been calculated. The excess parameter deviations have been fitted to Redlich−Kister type polynomial equation using multiparametric nonlinear regression analysis to estimate the binary coefficients and standard deviations. The results were discussed in terms of molecular interactions and dipole-dipole interactions. The effects of temperature and chlorine atoms number of investigated chloroethanes were also studied for the binary mixtures.

Effect of chain length of alcohols on transport and thermodynamic properties of binary mixtures with propiophenone at T= 298.15K, 303.15K and 308.15K

The Densities (ρ), flow times of Propiophenone, 1-Propanol,1-Butanol, 1-Pentanol, 1-Hexanol and of their mixtures were measured at different temperatures 298.15K,303.15K and 308.15K respectively. From these values viscosities (η), deviation in viscosity (Δη), excess Gibbs free energy of activation of viscous flow (G∗E) and Grunberg–Nissan interaction parameter (d’) have been computed. The deviation in viscosity (Δη) is observed to be more negative from ideal behavior in the liquid systems when chain length of alcohols was increased and decreased with increasing temperature. The results of deviation in viscosity, excess Gibbs free energy of activation of viscous flow (G∗E) and Grunberg–Nissan interaction parameter (d’) were correlated to Redlich-Kister type polynomial equation using multiparametric nonlinear regression analysis to estimate the binary coefficients and standard deviation. The results were discussed in terms of molecular interactions of unlike molecules.

A study on Volumetric and Viscometric Properties for the Mixtures of DMF and Other Alcohols from Temperatures ranges 303.15K to 323.15K

Densities, p, and viscosities, ?, of four binary systems: N,N-dimethyl formamide (DMF) + 1-propanol, DMF + 2-propanol, DMF + butanol and DMF + 1-pentanol have been measured at five different temperatures ranging form 303.15K to 323.15K at an interval of 5K. Excess molar volumes were found to be negative over the entire concentration ranges. The negative excess molar volume decreases with the increase of chain length of alcohol, the magnitude follows the order DMF+ 1-propanol >, + 2-propanol >, +butanol >, + 1-pentanol. The change of viscosity has been found to be sensitive to the chain length of alcohols. Excess viscosities and Grunberg- Nissan interaction parameters have been found to be positive for DMF + 1-propanol and DMF + 2-propanol systems, and negative for other two systems DMF + butanol and DMF + 1-pentanol. The thermodynamic energy of activation; such as, positive ?G#E each also compatible with the observation.

Excess parameters for the binary mixtures of sulfolane with chloroethanes at different temperatures

Densities (ρ), viscosities (η) and ultrasonic velocities (u) have been measured for the binary mixtures of sulfolane with 1,2-dichloroethane, 1,1,2-trichloroethane and 1,1,2,2-tetrachloroethane over the entire range of mole fraction at T = (303.15, 308.15 and 313.15) K. These data have been used to compute the excess molar volume (VE), deviation in viscosity (Δη), deviation in isentropic compressibility (Δκs), excess Gibbs free energy of activation of viscous flow (G*E) and Grunberg–Nissan interaction parameter (\( d^{\prime } \)). The excess parameters have been fitted to Redlich–Kister-type polynomial equation using multiparametric nonlinear regression analysis to estimate the binary coefficients and standard deviation. The experimental results have been discussed in terms of dipole–dipole interactions and formation of molecular complexes between unlike molecules of the investigated mixtures. Furthermore, the effect of temperature and chlorine atoms of chloroethane is also studied for the present binary mixtures.

Volumetric, viscosimetric and spectroscopic studies for aqueous solution of ethylene glycol monoethyl ether

As a continuation of the systematic study on thermodynamic properties for the aqueous solution of alkoxyethanols, this paper reports new measurements of densities and viscosities for the aqueous solution of ethylene glycol monoethyl ether (CH3CH2OCH2CH2OH) covering the whole composition range at T=(293.15, 303.15, 313.15, 323.15, 333.15) K under atmospheric pressure. The thermal expansion coefficient and Grunberg–Nissan interaction parameter were calculated. Excess properties including excess molar volumes, viscosity deviations, and excess energies of activation for viscous flow were calculated according to the experimental results. These data have been correlated by the Redlich–Kister type equations to obtain their coefficients and standard deviations. UV–vis spectra and fluorescence emission of probe pyrene were recorded to reflect molecular interactions and the polarity change of micro environment in an aqueous solution with varied concentration of ethylene glycol monoethyl ether. The results indicate that molecular interaction between ethylene glycol monoethyl ether and water is weaker than that between diethylene glycol monoethyl ether and triethylene glycol monoethyl ether with water.

Densities, viscosities and ultrasound velocities for binary mixtures of isopropylethanoate and non-polar hydrocarbon solvents

Densities (ρ), viscosities (η), and ultrasound velocities(u) for binary mixtures of isopropylethanoate and non-polar hydrocarbon solvents viz cyclohexane, benzene,1,4-dimethylbenzene and 1,3,5-trimethylbenzene have been measured at 308.15 K.Adiabatic compressibilities(β ad), available volume(V a) and acoustical impedance(Z) for the binary mixtures are evaluated from the ultrasound velocity and density data. Deviations in viscosity (Δη), in ultrasound velocity (Δu) and in compressibility (Δβ ad) from their additive values for all the systems studied are evaluated from the experimental values for the mixtures and their components at experimental temperature. ∆η and ∆u values are negative and ∆β ad are positive for cyclohexane + isopropylethanoate binary mixture. Several models for mixture viscosity are analysed. The strength of interactions are discussed in terms of Grunberg and Nissan interaction parameter (d). Hind–McLaughlin–Ubbelohde viscosity equation is found to be most suitable for the viscosities of the binary mixtures studied. Results are discussed in terms of interactions between components of the mixtures.

Excess molar volumes and excess viscosities for mixtures of N, N-dimethylformamide with methanol, ethanol and 2-propanol at different temperatures

Densities and viscosities for mixtures of N,N-dimethylformamide (DMF) with methanol, ethanol, and 2-propanol were measured as a function of mole fraction at (303.15, 308.15, 313.15, 318.15, 323.15) K and atmospheric pressure. From the measurements, excess molar volumes ( V m E), excess viscosities ( η E), and Grunberg and Nissan interaction parameters (ɛ) were calculated. The excess parameters were fitted to the Redlich–Kister equation. Excess molar volumes ( V m E) were found to be negative throughout the whole range of composition for all the three systems. The excess viscosities and interaction parameters of the DMF + methanol system were found to be positive whereas the values were negative for the other systems over the entire concentration range.

Densities, viscosities and excess properties of bis-2,4,4-trimethylpentylphosphinic acid (Cyanex 272) + diluent binary mixtures at 298.15 K and atmospheric pressure

Interactions of bis-2,4,4-trimethylpentylphosphinic acid (purified Cyanex 272, BTMPPA) + diluents ( n-hexane/cyclohexane/benzene/toluene/chloroform/carbon tetrachloride/1,2-dichloroethane (DCE)/1-heptanol) binary mixtures have been studied in terms of densities, viscosities, excess molar volumes ( V m E), excess viscosities ( η E), excess Gibbs energy of activation of flow (Δ G E) at 298.15 K and atmospheric pressure. The excess properties have been fitted to the Redlich–Kister-type equation and explained in terms of interactions. Variations of these values together with the variations of Grunberg–Nissan interaction parameter ( d) for BTMPPA + diluents binary systems show that BTMPPA interacts with diluents in varying degrees. However, no correlation between d, Δ G E, η E or V m E and the Cu ++/Fe 3+ extraction characteristics with BTMPPA is noticed.

Studies on intermolecular interactions in binary mixtures of alkoxypropanols with ethyl tert -butyl ether at various temperatures

Densities and viscosities at T = 293.15, 298.15 and 303.15 K in the binary liquid mixtures of ethyl tert-butyl ether (ETBE) with propylene glycol monomethyl ether (PM), dipropylene glycol monomethyl ether (DPM) and tripropylene glycol monomethyl ether (TPM) have been measured over the entire mixture compositions. These data have been used to compute the excess molar volumes (V E), the excess energies of activation for viscous flow ΔG* E, the deviations in the viscosity (Δη) from a mole fraction average and the Grunberg–Nissan interaction parameters (d 12). The values of V E, Δη, ΔG* E and d 12 are negative over the entire range of composition for all the studied binary mixtures. The changes of V E, Δη, ΔG* E and d 12 with variations in the composition and the chain-length of the alkyl groups in the alkoxypropanol molecules are discussed in terms of the intermolecular interactions.

Densities and viscosities of binary mixtures of {dimethylsulfoxide + aliphatic lower alkanols (C 1–C 3)} at temperatures from T = 303.15 K to T = 323.15 K

Densities and viscosities for dimethylsulfoxide (DMSO) with methanol, ethanol, 1-propanol, and 2-propanol have been measured as a function of mole fraction at T = (303.15, 308.15, 313.15, 318.15, and 323.15) K and atmospheric pressure. From the measurements, excess molar volumes ( V m E ), excess viscosities ( η E), and Grunberg and Nissan interaction parameters ( ε) have been calculated. The excess parameters are fitted to a Redlich–Kister equation. Excess molar volumes ( V m E ) are negative for (DMSO + methanol, + ethanol) systems throughout the whole range of composition. The (DMSO + 1-propanol) system shows both positive and negative excess molar volumes and (DMSO + 2-propanol) shows positive excess molar volume, hardly any negative value is observed in alcohol rich-region. The excess viscosities and interaction parameters of all the mixtures are negative except for the (DMSO + methanol) system which is positive.

Molecular Interactions in Propylene Carbonate + n-Alkanols at 25 ∘C

Densities and viscosities of the binary mixtures of propylene carbonate with methanol, ethanol, propanol, butanol, and hexanol, along with those of the pure liquids, were measured over the entire mole fraction range at 25 ∘C. Using the experimental values of densities ρ and viscosities η, the excess molar volumes VE, viscosity deviations Δη, excess Gibbs energies of activation of viscous flow ΔGE, and Grunberg–Nissan interaction parameters d12 were calculated from the linear dependence of these parameters on the composition of the mixtures.

Densities and Viscosities of Mixtures of Some Glycols and Polyglycols in Dimethyl Sulfoxide at 308.15 K

Densities and viscosities have been measured at 308.15 K over the entire range of composition for binary liquid mixtures of dimethyl sulfoxide with ethylene glycol, diethylene glycol, triethylene glycol, poly(ethylene glycol)-200, poly(ethylene glycol)-300, propylene glycol, and polypropylene glycol-1025. From these results excess molar volumes (VE), deviations in viscosity (Δη), and Grunberg and Nissan interaction parameters (d) have been calculated, and the excess parameters are fitted to a Redlich−Kister equation. The values of VE are negative whereas the values of Δη are positive over the entire composition range.

Viscometric and volumetric studies on binary mixtures of 1,2-dichloroethane and chlorinated methanes or their binary equimolar mixtures at 303.15 K

Excess viscosities, η E and molar excess volumes V E were obtained for binary mixtures of 1,2-dichloroethane and chlorinated methanes and for pseudobinary mixtures of 1,2-dichloroethane and equimolar binary mixtures from chlorinated methanes at 303.15 K. The chlorinated methanes include carbon tetrachloride, chloroform and dichloromethane. Grunberg—Nissan interaction parameter d and interaction energy for flow of activation W vis were also presented. The relationship between the η E's and the V E's has been quantitively considered using Singh's equations. The excess viscosities for all the systems are negative over the entire compositions. There are specific interactions between 1,2-dichloroethane and chlorinated methanes, but the specific interactions are not strong. The interactions of 1,2-dichloroethane with chlorinated methanes decrease in the order: chloroform > dichloromethane > carbon tetrachloride. ‘Pseudochloroform’ has been defined by us for the first time as the equimolar mixture of dichloromethane and carbon tetrachloride.