Effect of compression on the relationship between viscosity and dielectric relaxation time in hydrogen-bonded primary alcohols
S. Pawlus, S. Klotz, and M. Paluch
Accepted
High pressure viscosity and dielectric measurements were carried out on two monohydroxy alcohols: 2-ethyl-1-hexanol and 5-methyl-2-hexanol at room temperature. Analysis of the dielectric relaxation times versus viscosity revealed the breakdown of the Einstein-Debye (ED) relation above some characteristic pressure. The failure of the ED relation is a manifestation of pressure induced changes of supramolecular hydrogen bonded structures, which are present in the studied alcohols.