Abstract
The changes in enthalpy (?H8) between the experimental glass and the fully relaxed glass for two polystyrene samples of different molar masses have been estimated using the Cowie-Ferguson approach. These were then compared with the change predicted by a simple two-state conformational energy expression for the specific heat increment at constant volume. Comments on the nature of allowed motions in the glass are made. © 1997 Elsevier Science Ltd.
| Original language | English |
|---|---|
| Pages (from-to) | 3263-3268 |
| Number of pages | 6 |
| Journal | Polymer |
| Volume | 38 |
| Issue number | 13 |
| Publication status | Published - Jun 1997 |
Keywords
- Enthalpy relaxation
- Equilibrium glass
- Physical ageing