Isoconversion analysis of the glass transition

Prashanth Badrinarayanan, Wei Zheng, Sindee L. Simon

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Various aspects of the glass transition kinetics have been well described by phenomenological models of the glass transition, such as the TNM and KAHR model. An important assumption in these models is that the apparent activation energy, which describes the temperature dependence of the relaxation time, does not vary through the glass transition process. Some recent reports suggest that the activation energy decreases significantly from the glassy to the liquid state. In this work we apply an isoconversion analysis to data in the glass transition region which was obtained on cooling from capillary dilatometry and from differential scanning calorimetry (DSC) in order to determine whether the apparent activation energy changes through the glass transition.

Original languageEnglish
Title of host publicationSociety of Plastics Engineers Annual Technical Conference
Subtitle of host publicationPlastics Encounter at ANTEC 2007, Conference Proceedings
Number of pages5
StatePublished - 2007
EventSociety of Plastics Engineers Annual Technical Conference: Plastics Encounter at ANTEC 2007 - Cincinnati, OH, United States
Duration: May 6 2007May 11 2007

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings


ConferenceSociety of Plastics Engineers Annual Technical Conference: Plastics Encounter at ANTEC 2007
Country/TerritoryUnited States
CityCincinnati, OH


  • Glass transition
  • Isoconversion analysis
  • Polystyrene


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