Relaxation dynamics in glycerol-water mixtures. 2. Mesoscopic feature in water rich mixtures

Yoshihito Hayashi, Alexander Puzenko, Igal Balin, Yaroslav E. Ryabov, Yuri Feldman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

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.

Original languageAmerican English
Pages (from-to)9174-9177
Number of pages4
JournalJournal of Physical Chemistry B
Volume109
Issue number18
DOIs
StatePublished - 12 May 2005

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