Experimental evidence against the existence of an ideal glass transition

Sindee L. Simon, Gregory B. McKenna

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20 Scopus citations


The absolute liquid heat capacity of poly(α-methyl styrene) was determined at temperatures far below Tg and TK in previous work by use of pentamer/polymer athermal mixtures. Here the data is compared to data compiled by Wunderlich and coworkers from 0 K to above Tg in order to obtain the absolute entropy for the polymer in its equilibrium state at temperatures as much as 180 K below the glass temperature or 130 K below the Kauzmann temperature. The results provide no evidence of a second-order transition or of a smeared transition in the entropy. In addition, we find no evidence that the entropy would become negative at a finite temperature.

Original languageEnglish
Pages (from-to)672-675
Number of pages4
JournalJournal of Non-Crystalline Solids
Issue number10-12
StatePublished - May 1 2009


  • Calorimetry
  • Glass transition
  • Polymers and organics


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