Rubberlike dynamics in sulphur above the lambda-transition temperature.
The high-frequency acoustic dynamics of sulfur across the liquid-liquid, lambda transition has been studied using inelastic x-ray scattering. The combination of these high-frequency data with lower frequency, literature data indicates that liquid sulfur develops, in the high-temperature, polymeric solution phase, some characteristic features of a rubber. In particular, entanglement coupling among polymeric chains plays a relevant role in the dynamics of this liquid phase.
Monaco
G
G
European Synchrotron Radiation Facility, Boîte Postale 220, 38043 Grenoble, France.
Crapanzano
L
L
Bellissent
R
R
Crichton
W
W
Fioretto
D
D
Mezouar
M
M
Scarponi
F
F
Verbeni
R
R