Application of the Vrentas-Duda free-volume theory of diffusion below the glass-transition temperature: Application to hypromellose acetate succinate-solvent systems

2018 ◽  
Vol 136 (16) ◽  
pp. 47351 ◽  
Author(s):  
Derek R. Sturm ◽  
Ronald P. Danner ◽  
Justin D. Moser ◽  
Sheng-Wei Chiu
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Free Volume ◽  
Free Volume Theory ◽  
Temperature Application ◽  
Solvent Systems ◽  
Hypromellose Acetate Succinate

Effect of high pressure on glass transition in Zr-Ti-Cu-Ni-Be bulk metallic glass

2002 ◽  
Vol 754 ◽  
Author(s):  
Wei Hua Wang ◽  
Ping Wen ◽  
Yan Hui Zhao ◽  
Ming Xiang Pan ◽  
De Qian Zhao
Keyword(s):  
High Pressure ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Free Volume ◽  
Bulk Glass ◽  
Free Volume Theory ◽  
Glass Forming

ABSTRACTA new method is developed to directly exhibit glass transition in Zr-Ti-Cu-Ni-Be bulk glass-forming alloy under high pressure in metallic glass. Via the method, we derive an increase of glass transition temperature, Tg with pressure of 5.6 K/GPa, and a formation volume (ΔVf) of 6.5 Å3 for diffusion and the migration volume (ΔVm) of 6.5 Å3. The glass transition under high pressure is simulated based on the free-volume theory, and the simulations are consistent with the experimental observations.

Modeling the nonlinear PMMA behavior near glass transition temperature: application to its thermoforming

2011 ◽  
Author(s):  
P. Gilormini ◽  
L. Chevalier ◽  
G. Régnier ◽  
Francisco Chinesta ◽  
Yvan Chastel ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Temperature Application
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