A Comparison of the dielectric, acoustic, NMR and viscoelastic relaxation properties of supercooled liquids cyclic carbonates

Abstract

Dielectric, acoustic, NMR and viscoelastic relaxation measurements are reported on four cyclic carbonates. These liquids are known to possess anomalies in their physicochemical properties and two of the molecules exhibit a marked tendency to supercool. Relaxation times are reported for certain of the systems and comparison between techniques suggests that anisotropy of rotation appears at the same temperature as the observed anomalies.