Generalized single-parameter aging tests and their application to glycerol

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Abstract

Physical aging of glycerol following temperature jumps is studied by dielectric spectroscopy at temperatures just below the glass transition temperature. The data are analyzed using two single-parameter aging tests developed by Hecksher et al. [J. Chem. Phys. 142, 241103 (2015)]. We generalize these tests to include jumps ending at different temperatures. Moreover, four times larger jumps than previously are studied. The single-parameter aging tests are here for the first time applied to a hydrogen-bonded liquid. We conclude that glycerol obeys single-parameter aging to a good approximation.
Original languageEnglish
Article number044501
JournalThe Journal of Chemical Physics
Volume150
Issue number4
Number of pages8
ISSN0021-9606
DOIs
Publication statusPublished - 23 Jan 2019

Keywords

  • Viscous liquid
  • Glass transitions
  • Isomorph theory
  • Organic compounds
  • Dielectric properties
  • Dielectric spectroscopy
  • Hydrogen bonding
  • Aging theory

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