RT info:eu-repo/semantics/article
T1 Volumetric and viscosity data of 1-iodonaphthalene + n-alkane mixtures at (288.15-308.15) K
A1 Sanz del Soto, Luis Felipe
A1 González López, Juan Antonio Mariano
A1 Hevia de los Mozos, Luis Fernando
A1 Lozano Martín, Daniel
A1 Alves Laurentino, João Victor
A1 Pazoki, Fatemeh
A1 García de la Fuente, Isaías Laudelino
A1 Cobos Hernández, José Carlos
K1 1-iodonaphthalene
K1 n-alkanes
K1 structural effects
K1 dispersive interactions
K1 viscosity models
AB Density and viscosity measurements have been performed for the systems 1-iodonaphthalene + heptane, or + decane, or + dodecane, or + tetradecane over the temperature range (288.15-308.15) K and atmospheric pressure. At this end, a densitometer Anton-Paar DMA 602 and a Ubbelohde viscosimeter were used. Excess molar volumes are large and negative and decrease when the temperature is increased, which reveals that the main contribution to the excess molar volume arises from structural effects. The values of the deviations of dynamic viscosity from linear dependence on mole fraction are also large and negative, indicating that n-alkanes are good breakers of the interactions between 1-iodonaphthalene molecules. Different models were applied for describing viscosity data. McAllister's equation correlates well with kinematic viscosities. Results are similar when dynamic viscosities are correlated with the Grunberg-Nissan or Fang-He equations. This means that size effects are not relevant to the mentioned data. The adjustable parameter of the Grunberg-Nissan equation is negative for all the systems at any temperature, a typical feature of systems where dispersive interactions are dominant. This is in agreement with findings obtained in previous studies on similar n-alkane mixtures involving C6H5X (X = Cl, Br, I) or 1,2,4-trichlorobenzene or 1-chloronaphthalene. Free volume effects have little influence on the present dynamic viscosity results, well represented by the absolute rate model using residual molar Gibbs energies obtained from the DISQUAC model.
PB Elsevier
SN 0378-3812
YR 2026
FD 2026-03
LK https://uvadoc.uva.es/handle/10324/79193
UL https://uvadoc.uva.es/handle/10324/79193
LA eng
NO Fluid Phase Equilibria Volume 602, March 2026, 114607
NO Producción Científica
DS UVaDOC
RD 26-nov-2025