ISSN:
1435-1536
Keywords:
Polymers
;
glass transition
;
neutron scattering
;
polystyrene
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Atactic polystyrene, both side group and main chain deuterated, was investigated by inelastic neutron scattering in a wide temperature range around the glass transition from 2 to 450 K. In the glass the Boson peak position is only very weakly influenced by the deuteration of the phenyl group. In the neighborhood of the glass transition temperatureT g we find a fast relaxation process similar to other glasses. The onset of the fast relaxation in polystyrene, however, is observed already at temperaturesT g — 200 K. Results from partially deuterated polystyrene suggest a change of the phenyl ring dynamics already far belowT g.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00656884
Permalink
