Viscosity Arrhenius activation energy and derived partial molar properties in N,N-Dimethylacetamide + water binary mixtures at temperatures from 298.15 to 318.15 K

A Novel Approach of Partial Derivatives to Estimate the Normal Boiling Temperature via Viscosity Arrhenius Behaviour in N,N-Dimethylformamide + Ethanol Fluid Systems

“…The A s -values are very close to the shear viscosity of the same system in its vapour-phase at the same pressure and at the normal boiling temperature [20][21][22][23][24][25][26][27]. Thus the high A s -value of DMF, imply that the shear viscosity of DMF at vapour phase is nearly about ten times than of EtOH and it is also concluded that EtOH molecules bounding are more random and disordered in vapour state.…”

“…In the same context, the variation of the activation energy E a versus the molar composition (x 1 ) can give evidence of eventual change or modification in the complex structure or clusters [20] [ formed in binary fluid systems under effect of temperature and/or mixture composition [20][21][22][23][24][25][26][27]. When the activation energy Ea for the full mole compositions in the studied fluid system is depicted in Fig.…”

“…Case of pure components: For phenomenological discussion of the causal correlation, we have proposed an extra endogenous variable such as the viscosity Arrhenius temperature (T A ) where the reciprocal value is determined by the intercept to abscissa axis (1/T A ) or using the following equation: Table-2 summarizes the viscosity Arrhenius parameters of some solvents studied in previous works [21][22][23][24][25][26]35,39,41,[44][45][46][47][48][49][50] and Fig. 3 indicates mutual correlation between the parameters (Ea, ln As and TA) of Arrhenius.…”

“…Furthermore, the close dependence on composition, between the molar enthalpy of viscous flow (∆H*) and the viscosity activation energy (Ea) guided to considering that (Ea) is approximately a thermodynamic state function for which partial quantities have been determined to arise individual interaction's contributions of each pure solvent within the fluid mixture for each mole composition and the new given parameter nominated as the current Arrhenius temperature (TAi) related to each pure solvent (i) can provide in a reliable estimation of the boiling point value of the two pure solvents constituting the studied binary fluid mixture [20,21,[44][45][46][47][48][49][50].…”

Mathematical Model for the Fluid-Gas Spontaneous Displacement in Nanoscale Porous Media considering the Slippage and Temperature

“…The imbibition result from Figure 4 will give further explanation. Also, according to Haj-Kacem et al [33], can be closely related to the viscosity of the pure system in vapor state at the same studied pressure [34][35][36][37]. From the results of experiment, 1 and 2 can be derived, so 1 and 2 are approximately the viscosity of L1 and L2 systems at vapor state under the working pressure, if any some molecules pass in vapor state and mix with the gas fluid.…”