Influence of the molecular structure on the viscosity of some alkoxyethanols

Patrick Reghem (1) , Antoine Baylaucq , Maria J.P. Comuñas (2) , Josefa Fernandez , Christian Boned (1)

1 TEFC - Thermodynamique et Energétique des fluides complexes
2 Laboratorio de Propiedades Termofísicas

This work reports new measurements of the viscosity of some monoethylene glycol alkyl ether liquids: monoethylene glycol methyl ether (MEGME), monoethylene glycol ethyl ether (MEGEE) and monoethylene glycol iso-propyl ether (iso-MEGPE), up to 100 MPa at seven temperatures ranging from 293.15 to 353.15 K. The measurements at atmospheric pressure have been performed with an Ubbelohde-type glass capillary tube viscometer with an uncertainty of ±1%. At pressures up to 100 MPa the viscosity was determined with a falling-body viscometer with an uncertainty of ±2%. Using previous density data obtained at the laboratory, current measurements were used to study the dependence of the viscosity and of the molecular parameters of hard-sphere scheme and free-volume model on the molecular structure.

Mots clés: Alkoxyethanol; Falling-body viscometer; High pressure; Monoethylene glycol alkyl ether; Viscosity

Domaines: Chimie-Physique [physics.chem-ph]

Patrick Reghem, Antoine Baylaucq, Maria J.P. Comuñas, Josefa Fernandez, Christian Boned. Influence of the molecular structure on the viscosity of some alkoxyethanols. Fluid Phase Equilibria, 2005, 236 (1-2), pp.229-236. ⟨10.1016/j.fluid.2005.02.009⟩. ⟨hal-00289848⟩