THE DIELECTRIC SPECTRA OF WATER-ETHANOL MIXTURES IN THE MICROWAVE REGION,
Abstract
The dielectric constant and loss were measured at 8.5, 3.0, 1.0, and 0.3 kMc/sec for solutions of ethanol and water as a function of concentration and temperature. The mixtures exhibit a distribution of relaxation times as opposed to single time constants for the pure components. The distribution of time constants was resolved as the superposition of two dispersions, each having a single time constant. The intensity and time constant of the two dispersions were found as a function of temperature and concentration and explained in terms of a mechanism in which hydrogen bonds are broken and allowed to reorient. In addition, the dielectric constant and loss were measured for water from 5 to-5C, and no abnormal behavior was noted at 4C or in the supercooled state. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1965
- Accession Number
- AD0618409
Entities
People
- Douglas E. Buck
Organizations
- Massachusetts Institute of Technology