Jump to main content
Jump to site search

Issue 47, 2013
Previous Article Next Article

Glassy dynamics and physical aging in fucose saccharides as studied by infrared- and broadband dielectric spectroscopy

Author affiliations

Abstract

Fourier Transform Infra Red (FTIR) and Broadband Dielectric Spectroscopy (BDS) are combined to study both the intra- and inter-molecular dynamics of two isomers of glass forming fucose, far below and above the calorimetric glass transition temperature, Tg. It is shown that the various IR-active vibrations exhibit in their spectral position and oscillator strength quite different temperature dependencies, proving their specific signature in the course of densification and glass formation. The coupling between intra- and inter molecular dynamics is exemplified by distinct changes in IR active ring vibrations far above the calorimetric glass transition temperature at about 1.16Tg, where the dynamic glass transition (α relaxation) and the secondary β relaxation merge. For physically annealed samples it is demonstrated that upon aging the different moieties show characteristic features as well, proving the necessity of atomistic descriptions beyond coarse-grained models.

Graphical abstract: Glassy dynamics and physical aging in fucose saccharides as studied by infrared- and broadband dielectric spectroscopy

Back to tab navigation

Publication details

The article was received on 19 Jun 2013, accepted on 15 Oct 2013 and first published on 05 Nov 2013


Article type: Paper
DOI: 10.1039/C3CP52551A
Citation: Phys. Chem. Chem. Phys., 2013,15, 20641-20650
  •   Request permissions

    Glassy dynamics and physical aging in fucose saccharides as studied by infrared- and broadband dielectric spectroscopy

    W. Kossack, K. Adrjanowicz, M. Tarnacka, W. Kiprop Kipnusu, M. Dulski, E. U. Mapesa, K. Kaminski, S. Pawlus, M. Paluch and F. Kremer, Phys. Chem. Chem. Phys., 2013, 15, 20641
    DOI: 10.1039/C3CP52551A

Search articles by author

Spotlight

Advertisements