Jump to main content
Jump to site search

Issue 6, 2018
Previous Article Next Article

Secondary relaxation in ultrastable etoricoxib: evidence of correlation with structural relaxation

Author affiliations

Abstract

Secondary relaxations are fundamental for their impact in the properties of glasses and for their inseparable connection to the structural relaxation. Understanding their density dependence and aging behavior is key to fully address the nature of glasses. Ultrastable glasses establish a new benchmark to study the characteristics of secondary relaxations, since their enthalpy and density levels are unattainable by other routes. Here, we use dielectric spectroscopy at ambient and elevated pressures to study the characteristics of the secondary relaxation in ultrastable etoricoxib, reporting a 71% decrease in dielectric strength and one decade increase in relaxation time compared to the ordinary glass. Interestingly, we find an unprecedented connection between secondary and structural relaxations in ultrastable etoricoxib in exactly the same manner as in the ordinary glass, manifested through different properties, such as aging and devitrification. These results further support and extend the general validity of the connection between the secondary and structural relaxation.

Graphical abstract: Secondary relaxation in ultrastable etoricoxib: evidence of correlation with structural relaxation

Back to tab navigation

Supplementary files

Publication details

The article was received on 20 Sep 2017, accepted on 21 Dec 2017 and first published on 23 Jan 2018


Article type: Paper
DOI: 10.1039/C7CP06445D
Citation: Phys. Chem. Chem. Phys., 2018,20, 3939-3945
  • Open access: Creative Commons BY license
  •   Request permissions

    Secondary relaxation in ultrastable etoricoxib: evidence of correlation with structural relaxation

    C. Rodríguez-Tinoco, M. Rams-Baron, K. L. Ngai, K. Jurkiewicz, J. Rodríguez-Viejo and M. Paluch, Phys. Chem. Chem. Phys., 2018, 20, 3939
    DOI: 10.1039/C7CP06445D

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements