Glass transitions and the fracture behaviour of gluten and starches within the glassy state
β Scribed by R.J. Nicholls; I.A.M. Appelqvist; A.P. Davies; S.J. Ingman; P.J. Lillford
- Book ID
- 117559975
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 886 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0733-5210
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According to Ehrenfest classification, the glass transition is a second-order phase transition. Controversy, however, remains due to the discrepancy between experiment and the Ehrenfest relations and thereby their prediction of unity of the Prigogine-Defay ratio in particular. In this article, we co
## Abstract PVTβmeasurements on atactic polystyrene shows that the Ehrenfest equations, which describe a thermodynamic transformation of the second order, are not applicable for the glass transition. The introduction of one internal ordering parameter ΞΆ in addition to the conventional variables T a