Dielectric properties of binary solvent mixtures of dimethyl sulfoxide with water

Int J Mol Sci. 2009 Mar;10(3):1261-70. doi: 10.3390/ijms10031261. Epub 2009 Mar 17.

Abstract

In this paper, the dielectric properties of water-dimethylsulfoxide (DMSO) mixtures with different mole ratios have been investigated in the range of 1 GHz to 40 GHz at 298 K by using a molecular dynamics (MD) simulation. Only one dielectric loss peak was observed in the frequency range and the relaxation in these mixtures can be described by a single relaxation time of the Davidson-Cole. It was observed that within experimental error the dielectric relaxation can be described by the Debye-like model (beta approximately 1, S.M. Puranik, et al. J. Chem. Soc. Faraday Trans.1992, 88, 433 - 435). In general, the results are very consistent with the experimental measurements.

Keywords: Activation energy; Binary Solvent; Dielectric properties; MD.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Dimethyl Sulfoxide / chemistry*
  • Models, Chemical
  • Molecular Dynamics Simulation
  • Solvents / chemistry
  • Temperature
  • Thermodynamics
  • Water / chemistry*

Substances

  • Solvents
  • Water
  • Dimethyl Sulfoxide