Viscous
Behavior of Imidazolium-Based Ionic Liquids
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Abstract
The
viscosity of four imidazolium-based ionic liquids is analyzed
as a function of pressure and temperature. Experimental measurements
were carried out using an electromagnetic moving piston viscometer
in the 303–353 K and 0.1–70 MPa ranges on synthesized
ultrapure samples, and compared with available literature data. Molecular
dynamics simulations were used to analyze the fluids’ dynamic
properties from a nanoscopic viewpoint, with special attention paid
to self-diffusion coefficients and dynamic viscosity. Simulated properties
are in excellent agreement with experimental results in spite of the
glasslike dynamics of some of the studied fluids