Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1484232 | Journal of Non-Crystalline Solids | 2009 | 4 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Sindee L. Simon, Gregory B. McKenna,