Dynamic light scattering study of poly(di-n-butyl itaconate) in the glass transition region

Polymer ◽  
1991 ◽  
Vol 32 (11) ◽  
pp. 1928-1934 ◽  
Author(s):  
Tzyy-Lung Yu ◽  
K Devanand ◽  
A.M Jamieson ◽  
R Simha
Keyword(s):  
Glass Transition ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Transition Region ◽  
Glass Transition Region ◽  
Scattering Study

Fluctuation Model for Structural Relaxation and the Glass Transition

1996 ◽  
Vol 455 ◽  
Author(s):  
C. T. Moynihan ◽  
J.-H. Whang
Keyword(s):  
Glass Transition ◽  
Light Scattering ◽  
Transition Region ◽  
Structural Relaxation ◽  
Relaxation Times ◽  
Glass Transition Region ◽  
Physical Distribution ◽  
Quantitative Test ◽  
Minor Contribution ◽  
Fluctuation Model

ABSTRACTThe fluctuation or independently relaxing nanoregion model attributes the distribution of structural relaxation times in a glassforming melt to a physical distribution of nanoregions which vary in their properties. A quantitative test of this model is described, in which parameters derived from relaxational data on B2O3 glass are shown to be capable of predicting the anomalous light scattering in the glass transition region. It is also shown that the local inhomogenieties which lead to the distribution of structural relaxation times make only a very minor contribution to the distribution of electrical relaxation times in ionically conducting glasses and melts.

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