Simulation of the glass transition in polymeric systems: evidence for an underlying phase transition?

1998 ◽  
Vol 77 (2) ◽  
pp. 591-608 ◽  
Author(s):  
Kurt Binder, Jorg Baschnagel, Sabine Boh
Keyword(s):  
Phase Transition ◽  
Glass Transition ◽  
Polymeric Systems

Simulation of the glass transition in polymeric systems: Evidence for an underlying phase transition?

1998 ◽  
Vol 77 (2) ◽  
pp. 591-608 ◽  
Author(s):  
Kurt Binder ◽  
Jörg Baschnagel ◽  
Sabine Böhmer ◽  
Wolfgang Paul
Keyword(s):  
Phase Transition ◽  
Glass Transition ◽  
Polymeric Systems

Phase transition in non-crystalline solids viewed from heating

1995 ◽  
Vol 398 ◽  
Author(s):  
K. Nakayama ◽  
K. Kojima ◽  
N. Takahashi ◽  
Y. Masaki ◽  
A. Kitagawa ◽  
...  
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Heating Rate ◽  
Transient Phase ◽  
Disordered Structures ◽  
Fragmentation Processes ◽  
Scaling Rule

ABSTRACTThe heating-rate dependence of crystallization temperature, Tc, and the glass transition temperature, Tg, is studied from the view points of nucleation and fragmentation processes in disordered structures. Tc and Tg are expected to increase monotonically with heating rate. Such behaviors of Tc and Tg are classified into four characteristic regions with respect to the heating rate. Results are summarized in the Transient Phase Diagram where Tc and Tg are given as a function of heating rate. The scaling rule in the Transient Phase Diagram is given.

scholarly journals Transient Phases and their Transition Temperatures of A-Si in Non-Isothermal Processes

1993 ◽  
Vol 321 ◽  
Author(s):  
Masakuni Suzuki ◽  
Akio Kitagaffa
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Glass Transition ◽  
Transition Temperature ◽  
Heating Rate ◽  
Random Networks ◽  
Transition Temperatures ◽  
Isothermal Processes ◽  
Transient Phases ◽  
New Phase

ABSTRACTThe heating rate dependence of the phase transition temperature was formulated based on the temperature dependence of nucleation of a new phase. The glass transition temperature of a-Si was explained in terms of van der Waals fluid of a-Si pseudo-Molecules which are produced by the fragmentation of continuous random networks of Si atoms. Transient phases and their transition temperatures as a function of the heating rate are summarized in the phase diagram.

Phase Separation Behaviors Of Polyimide Blends

1998 ◽  
Vol 511 ◽  
Author(s):  
C. H. Ryu ◽  
Y. C. Bae
Keyword(s):  
Phase Transition ◽  
Molecular Weight ◽  
Glass Transition ◽  
Transition Temperature ◽  
Critical Temperature ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Phase Transition Temperatures ◽  
Phase Behaviors ◽  
System Phase

ABSTRACTWe investigated phase behaviors of polyimide blends such as polyethermide(PEI)/polystyrene(PS), PEI/polyamideimide(PAI), PEI/polyethyleneoxide(PEO), and PAI/PEO systems. Our sample systems exhibited lower critical solution temperature(LCST) phase behaviors. In the PEI/PS system, phase transition occurred near or above the glass transition temperature(Tg) of PS and the critical temperature of the system increased with decreasing molecular weight of PS. For PEI/PAI and PEI/PEO systems, the critical temperature of PEI/PAI system is higher than that of PEI/PEO system. Phase transition temperatures of PAI/PEO systems appeared near or below the melting point of PEO.

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