Observation of a dynamical crossover in the shear relaxation processes in supercooled selenium near the glass transition

2019 ◽  
Vol 150 (9) ◽  
pp. 094502 ◽  
Author(s):  
Weidi Zhu ◽  
Bruce G. Aitken ◽  
Sabyasachi Sen
Keyword(s):  
Glass Transition ◽  
Relaxation Processes ◽  
Shear Relaxation ◽  
Dynamical Crossover

Relaxation processes and intermolecular interactions in PVME hydrogels in sub-zero temperatures: Glass transition and pre-melting of ice

Polymer ◽  
2012 ◽  
Vol 53 (1) ◽  
pp. 161-168 ◽  
Author(s):  
Marcin Pastorczak ◽  
Michael Wübbenhorst ◽  
Gustavo Dominguez-Espinosa ◽  
Lidia Okrasa ◽  
Marek Pyda ◽  
...  
Keyword(s):  
Glass Transition ◽  
Intermolecular Interactions ◽  
Relaxation Processes

Glass Transition and Relaxation Processes in Supercooled Water

2004 ◽  
Vol 93 (24) ◽  
Author(s):  
Silvina Cerveny ◽  
Gustavo A. Schwartz ◽  
Rikard Bergman ◽  
Jan Swenson
Keyword(s):  
Glass Transition ◽  
Supercooled Water ◽  
Relaxation Processes

scholarly journals Pharmaceutical Amorphous Organic Materials Characterization by Using the Differential Scanning Calorimetry and Dynamic Mechanical Analysis

2011 ◽  
Vol 6 (2) ◽  
pp. 91-95
Author(s):  
Ion Dranca ◽  
Igor Povar ◽  
Tudor Lupascu
Keyword(s):  
Differential Scanning Calorimetry ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Dynamic Mechanical Analysis ◽  
Mechanical Analysis ◽  
Relaxation Processes ◽  
Scanning Calorimetry ◽  
Dynamic Mechanical ◽  
Β Relaxation

This research has been carried out in order to demonstrate the use of differential scanning calorimetry (DSC) in detecting and measuring α- and β-relaxation processes in amorphous pharmaceutical systems. DSC has been employed to study amorphous samples of poly (vinylpyrrolidone) (PVP), indomethacin (InM), and ursodeoxycholic acid (UDA) that are annealed at temperature (Ta) around 0.8 of their glass transition temperature (Tg). Dynamic mechanical analysis (DMA) is used to measure β- relaxation in PVP. Yet, the DSC has been used to study the glassy indomethacin aged at 0 and -10 oC for periods of time up to 109 and 210 days respectively. The results demonstrate the emergence of a small melting peak of the α-polymorph after aging for 69 days at 0°C and for 147 days at -10°C (i.e., ~55°C below the glass transition temperature) that provides evidence of nucleation occurring in the temperature region of the β-relaxation.

Comment on ``Analysis of Shear‐Relaxation Processes in Liquid''

1966 ◽  
Vol 45 (11) ◽  
pp. 4375-4376
Author(s):  
G. C. Knollman ◽  
D. O. Miles ◽  
A. S. Hamamoto
Keyword(s):  
Relaxation Processes ◽  
Shear Relaxation

Bulk and Shear Relaxation Processes in Poly-i-butyl Methacrylate

1968 ◽  
Vol 7 (5) ◽  
pp. 451-461 ◽  
Author(s):  
Eiichi Morita ◽  
Ryusuke Kono ◽  
Haruyo Yoshizaki
Keyword(s):  
Butyl Methacrylate ◽  
Relaxation Processes ◽  
Shear Relaxation

Shear‐Relaxation Processes in Liquids

1965 ◽  
Vol 43 (4) ◽  
pp. 1160-1170 ◽  
Author(s):  
G. C. Knollman ◽  
D. O. Miles ◽  
A. S. Hamamoto
Keyword(s):  
Relaxation Processes ◽  
Shear Relaxation
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