Kinetics of Spinodal Decomposition in Liquid Crystalline Polymers:  Processing Effects on the Phase Separation Morphology

1998 ◽  
Vol 31 (1) ◽  
pp. 193-200 ◽  
Author(s):  
John R. Dorgan ◽  
Dong Yan
Keyword(s):  
Phase Separation ◽  
Spinodal Decomposition ◽  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Crystalline Polymers ◽  
Processing Effects ◽  
Kinetics Of

Liquid Crystal-Like Phase Separation in Systems of Macroscopic Rods

1988 ◽  
Vol 134 ◽  
Author(s):  
Larry A. Chick ◽  
Christopher Viney ◽  
Ilhan A. Aksay
Keyword(s):  
Phase Diagram ◽  
Liquid Crystal ◽  
Phase Separation ◽  
Liquid Crystalline ◽  
Axial Ratio ◽  
Liquid Crystalline Polymers ◽  
Two Dimensions ◽  
Crystalline Polymers ◽  
Critical Concentrations ◽  
Preliminary Phase

ABSTRACTExperiments with monolayers of macroscopic rods indicate separation into isotropic and aligned phases at greater-than-critical concentrations. This behavior is qualitatively similar to that of rodlike liquid crystalline polymers, which in turn has been modelled successfully in threedimensions by Flory and Ronca. We have adapted their approach to predict the ordering of rods in two dimensions. A preliminary phase diagram is presented. The critical rod concentration at which an aligned phase can appear first is a decreasing function of rod axial ratio. Rods of a given axial ratio will phase separate at lower overall concentrations in two dimensions than in three.

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