title: Relaxation dynamics in glycerol-water mixtures. 2. Mesoscopic feature in water rich mixtures.
abstract: The relaxation dynamics of water-rich glycerol-water mixtures is studied by broadband dielectric spectroscopy (BDS) at 173-323 K and differential scanning calorimetry (DSC) at 138-313 K. These data indicate the existence of the critical concentration of 40 mol % glycerol. In the studied temperature range for water-rich glycerol mixtures, the two states of water (ice and interfacial water) are observed in addition to water in the mesoscopic 40 mol % glycerol-water domains. The possible kinetics of water exchange between different water states is discussed in order to explain the mechanism of the broad melting behavior observed by DSC.
authors.affiliation: Department of Applied Physics, The Hebrew University of Jerusalem, Givat Ram, 91904, Jerusalem, Israel.
authors.forename: Yoshihito
authors.initials: Y
authors.lastname: Hayashi
authors.forename: Alexander
authors.initials: A
authors.lastname: Puzenko
authors.forename: Igal
authors.initials: I
authors.lastname: Balin
authors.forename: Yaroslav E
authors.initials: YE
authors.lastname: Ryabov
authors.forename: Yuri
authors.initials: Y
authors.lastname: Feldman