The glass transition temperature versus the fictive temperature

Prashanth Badrinarayanan, Wei Zheng, Qingxiu Li, Sindee L. Simon

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207 Scopus citations


A comparison of the values of the glass transition temperature (Tg) measured on cooling and the limiting fictive temperature (Tf) measured on heating as a function of cooling rate is performed for a polystyrene sample using both capillary dilatometry and differential scanning calorimetry (DSC). The results from both techniques indicate that Tf is systematically lower than Tg presumably due to the breadth of the relaxation on cooling. The Tool-Narayanaswamy-Moynihan (TNM) model is used to fit the experimental data from dilatometry and DSC in order to ascertain the origins of the higher value of Tg compared to Tf.

Original languageEnglish
Pages (from-to)2603-2612
Number of pages10
JournalJournal of Non-Crystalline Solids
Issue number26
StatePublished - Aug 1 2007


  • Calorimetry
  • Glass transition
  • Measurement techniques
  • Modeling and simulation
  • Polymers and organics


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