DIELECTRIC-SPECTROSCOPY OF SOME MULTIHYDROXY COMPOUND SOLUTIONS IN WATER TETRAHYDROFURAN MIXTURES/

The dielectric spectra up to 72 GHz have been measured at 20 degrees C for solutions of glucose and sorbitol (max. I mol/l) in the mixed sol vent water/tetrahydrofuran (THF) as a function of the THF content (max . volume fraction 0.4). There is no significant difference in the rela xation behaviour of corresponding glucose and sorbitol systems. The sp ectra of binary water/THF as well as hydroxy compound/water systems sh ow that the respective minor components influence the structure and dy namics of water. The ternary systems hydroxy compound/water/THF, howev er, exhibit merely a superposition of those effects, thus there Is no evidence for an interaction between the hydroxy compound and THF in aq ueous environment.