1. Internal friction in amorphous polystyrene at low temperature and high frequency
- Author
-
G. Bellessa and Jean Yves Duquesne
- Subjects
chemistry.chemical_classification ,Materials science ,Resolution (electron density) ,Relaxation (NMR) ,General Engineering ,Polymer ,Molecular physics ,Internal friction ,Amorphous solid ,chemistry.chemical_compound ,chemistry ,Thermal ,Amorphous selenium ,Polystyrene - Abstract
The existence in polystyrene of an internal-friction peak around 80 K at 50 MHz is reported. This peak displays many similarities with the peak observed in amorphous selenium. It is interpreted in the frame of the same model. We explain our results with thermal activated relaxation processes displaying a constant distribution of barrier heights between 0 and 600 K. We suggest that the observed peak is the resolution at high frequency of the e-shoulder which has been reported previously at much lower frequency.
- Published
- 1981
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