Shear viscosities of binary liquid mixtures: 2-pyrrolidinone with 1-alkanols

Abstract

Excess viscosities, excess volumes, and free energies of activation for viscous flow of the binary mixtures 2-pyrrolldone + methanol, + ethanol, + 1-propanol, + 1-butanol, and + 1-pentanol were calculated at five different temperatures from density and viscosity measurements. The results obtained suggest that the breaking of the self-associations existing In the pure liquids Is partly balanced by the heteroassociations formed among the molecules of the binary mixtures. These heteroassociations decrease with decreasing temperature and Increasing chain length of the alcohol. The small excess volumes calculated denote weak Interactions, In accordance with the different shape and size of the mixing molecules.

Experimental densities and derived thermodynamic properties of liquid propan-1-ol at temperatures from 298 to 423K and at pressures up to 40MPa

“…It can be seen that the majority of deviations are lower than ±0.1%, the average absolute deviation (AAD) is about 0.06% (see also Table 3). Most of the data by Zúñiga-Moreno and Galicia-Luna [53] show systematic negative deviations, although the deviations are very close [49]; ( ), [56]; ( ), [71]; (×), [58]; (⊗), [64]; ( ), [74]; (♦), [47]; (+), [65]; ( ), [73]; ( ), [61]; ( ), [70]; ( ), [62]; ( ), [33]; ( ), [72]; (♂), [76]; (♀), [32]; ( ), [75]; ( ), [35]; ( ), [36]; ( ), [21]; (--), calculated with correlation by Khasanshin [92]; (----), calculated with correlation by Marczak et al [47].…”

Compressed Liquid Densities of 1-Pentanol and 2-Pentanol from 313 to 363 K at Pressures to 25 MPa

“…[15]. Relative deviations of experimental data from literature values at atmospheric pressure [14,[31][32][33][34][35][36][37] and density values calculated with Eq. (1) for 1-pentanol and 2-pentanol are shown in Figs.…”

“…, Sülzner et al [16]. (1) for 1-pentanol at atmospheric pressure; •, Diaz-Peña and Tardajos [31]; , Ortega and Paz-Andrade [32]; , Riggio et al [33]; ♦, Ortega [34]; , Garcia et al [35]; ✩, Garg et al [14]; ×, Indraswati et al [36]; +, Rodriguez et al [37]. …”

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

“…Further, the excess viscosities of these systems, regardless of their sign, can be generalized by saying that the magnitude of the values, |ŋ Gracia et al 1991 [35] observed that for two pyrolidone + 1-alkanols, excess free energies were found to be positive in case of methanol and negative with higher alcohols. The negative value of ∆G #E for DMF + butanol and DMF + 1-pentanol show agreement with above [35] observation. The sign of, ∆G #E for a system is regarded to be more reliable criterion as to tell about the strength of interaction.…”