Excess volumes for n-alkanols +n-alkanes IV. Binary mixtures of decan-1-ol +n-pentane, +n-hexane, +n-octane, +n-decane, and +n-hexadecane

Isobaric heat capacities, densities, isentropic compressibilities and second-order excess derivatives for (1-propanol +n-decane)

“…(1)(2)(3)(4)(5)(6) In this respect, there exists a large body of data on excess molar volumes V E m (2,(7)(8)(9)(10)(11) and excess molar enthalpies H E m . (1,(12)(13)(14)(15)(16) However, the behaviour of excess properties obtained from partial derivatives of first-order excess properties such as V E m and H E m , i.e.…”

Modeling of Volumetric Properties of Organic Mixtures Based on Molecular Interactions

“…For the binary system of 1-butanol + n-heptane ) V E values are positive in the entire composition range with asymmetric V E −x 1 curves, shifted towards the lower 1-butanol mole fractions. Also, the V E values increase with temperature rising from 288.15 to 323.15 K. As it was discussed previously (Treszczanowicz et al, 1981), the positive excess volumes in mixtures of n-alcohols and n-alkanes are the result of (i) the disruption of alcohol multimers due to breaking of hydrogen bonds (chemical contribution) and (ii) non-specific physical interactions between the real species in a mixture (physical contribution). Negative V E values are mostly caused by interstitial accommodation and changes of free volumes (structural contribution).…”

“…Negative V E values are mostly caused by interstitial accommodation and changes of free volumes (structural contribution). Since the chemical contribution of hydrogen bond breaking to V E is negligible, except for small mole fractions, it is assumed that physical contribution comprises the major part of positive V E values (Treszczanowicz et al, 1981) in this system. The sharp increases of the V E in the dilute 1-butanol region suggest the dominance of the disruption of the H-bonds of alcohol multimers by unlike n-heptane molecules.…”

Thermophysical and Acoustical Properties of Benzylparaben with Benzene at Temperatures of 303.15, 308.15 and 313.15 K

“…The sign of excess volume of a system depends on the relative magnitude of expansion/contraction on mixing of two liquids. If the factors causing expansion dominate the factors causing contraction, then V E becomes positive [17,18]. The factors that are responsible for expansion in volume are as follows.…”