Relaxation in networks strained in the glass-transition regime

2007 ◽  
pp. 29-43 ◽  
Author(s):  
H. G. Kilian ◽  
V. Kraus
Keyword(s):  
Glass Transition ◽  
Transition Regime

Secondary relaxation in the glass-transition regime ofortho-terphenyl observed by incoherent neutron scattering

1992 ◽  
Vol 45 (18) ◽  
pp. 10301-10305 ◽  
Author(s):  
M. Kiebel ◽  
E. Bartsch ◽  
O. Debus ◽  
F. Fujara ◽  
W. Petry ◽  
...  
Keyword(s):  
Glass Transition ◽  
Neutron Scattering ◽  
Transition Regime ◽  
Secondary Relaxation ◽  
Incoherent Neutron Scattering ◽  
Incoherent Neutron

Laser light scattering studies of bulk polymers in the glass transition regime

1981 ◽  
Vol 21 (14) ◽  
pp. 965-969 ◽  
Author(s):  
A. M. Jamieson ◽  
R. Simha ◽  
H. Lee ◽  
J. Tribone
Keyword(s):  
Glass Transition ◽  
Light Scattering ◽  
Laser Light ◽  
Laser Light Scattering ◽  
Transition Regime ◽  
Bulk Polymers

LASER LIGHT SCATTERING STUDIES OF BULK POLYMERS IN THE GLASS TRANSITION REGIME

1981 ◽  
Vol 371 (1 Structure and) ◽  
pp. 186-198 ◽  
Author(s):  
A. M. Jamieson ◽  
R. Simha ◽  
H. Lee ◽  
J. Tribone
Keyword(s):  
Glass Transition ◽  
Light Scattering ◽  
Laser Light ◽  
Laser Light Scattering ◽  
Transition Regime ◽  
Bulk Polymers

Carbon Black Distribution in Rubber Blends: A Dynamic-Mechanical Analysis

1999 ◽  
Vol 72 (1) ◽  
pp. 91-108 ◽  
Author(s):  
M. Klüppel ◽  
R. H. Schuster ◽  
J. Schaper
Keyword(s):  
Glass Transition ◽  
Carbon Black ◽  
Strain Amplitude ◽  
Volume Fraction ◽  
Loss Modulus ◽  
Critical Phenomenon ◽  
Local Strain ◽  
Nonlinear Dependence ◽  
Transition Regime ◽  
Rubber Blends

Abstract The influence of phase morphology and carbon black distribution on energy storage and dissipation during dynamic excitations of rubber blends is discussed. It is shown that differences in the local stiffness of the phases in the glass transition regime of unfilled blends lead to characteristic deviations of the local strain from the external strain amplitude. These deviations are governed by a critical phenomenon due to the formation of a phase network above a critical blend ratio. As a result, a strongly nonlinear dependence of the glass transition maxima of the loss modulus on the volume fraction of the phases is observed. By counting the elastically effective bonds of the phase network, the local strain amplitude is estimated by purely geometrical arguments. Based on a consideration of the phase network, the distribution of carbon black in the different phases of filled blends is estimated from the height of the local maxima of the loss modulus in the glass transition regime. Thereby, a linear increase of the maximum value of the loss modulus with rising carbon black concentration is exploited that relates the enhanced energy dissipation of filled rubbers to the internal friction of the filler particles. Results on EPDM/BR/N550 blends indicate that carbon black is preferably located in the BR phase. A somewhat higher concentration of carbon black in the SBR phase is found in the case of NR/SBR(40% Styrene)/N330 blends.

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