Polymer Liquid Crystals and Their Blends: A Hierarchy of Structures

1991 ◽  
Vol 255 ◽  
Author(s):  
Witold Brostow ◽  
Michael Hess
Keyword(s):  
Liquid Crystals ◽  
Building Materials ◽  
Computer Modelling ◽  
Hierarchical Structures ◽  
Building Blocks ◽  
Molecular Structures ◽  
Polymer Liquid ◽  
Phase Structures ◽  
Smectic Phases ◽  
Polymer Liquid Crystals

AbstractHierarchical structures are possible in polymer liquid crystals (PLCs) since each molecule contains at least two kinds of building blocks that are not homeomorphic to each other. We discuss some examples of molecular structures and phase structures of monomer liquid crystals (MLCs) and PLCs: smectic phases formed by interdigitated MLC molecules; PLC molecule classification based on increasing complexity – and its consequences on properties of the materials; and formation and phase structures of LC-rich islands in PLCs and in PLC blends. Some rules pertaining to hierarchical structures are formulated. The knowledge of hierarchies is neccessary – but not sufficient – for intelligent procesing of PLCs and their blends and for achieving properties defined in advance. Computer modelling represents another important element of building materials to order.

Equilibrium and Non-Equilibrium Phases and Phase Diagrams in Blends of Polymer Liquid Crystals with Enoineerino Polymers

1989 ◽  
Vol 171 ◽  
Author(s):  
Witold Brostow ◽  
Theodore S. Dziemianowicz ◽  
Michael Hess ◽  
Robert Kosfeld
Keyword(s):  
Liquid Crystals ◽  
Phase Diagrams ◽  
Two Phase ◽  
Polymer Liquid ◽  
Intelligent Processing ◽  
Phase Structures ◽  
Polymer Liquid Crystals ◽  
Phase Systems ◽  
Equilibrium Phases ◽  
Engineering Polymers

ABSTRACTThis work represents a continuation of earlier studies of blends of polymer liquid crystals (PLC) with ordinary engineering polymers (EP). We now focus on connections between mechanical and other properties and phase structures and phase diagrams. Pure PLC are already two-phase systems; in each case addition of an EP complicates the situation further. In particular, we are concerned with phases which we call quasi-liquids, at temperatures between the glass transition and the melting point. Quasi-liquids do not have the mobility usually associated with liquids - because of the presence of other constituents and also because of orientational effects produced by the mesogenic groups. In phase diagrams of PLC-containing systems one should also take into account non-equlibrium phases. We are trying to show how such diagrams make possible Intelligent processing and a better control of properties of the PLC + EP materials.

Statistical mechanics of defects in polymer liquid crystals

1992 ◽  
Vol 2 (5) ◽  
pp. 1215-1236 ◽  
Author(s):  
Jonathan V. Selinger ◽  
Robijn F. Bruinsma
Keyword(s):  
Liquid Crystals ◽  
Statistical Mechanics ◽  
Polymer Liquid ◽  
Polymer Liquid Crystals

Orientational elastic deformations in polymer liquid crystals induced by electric fields: Aromatic polyesters

1993 ◽  
Vol 29 (7) ◽  
pp. 1003-1012 ◽  
Author(s):  
V.N. Tsvetkov ◽  
N.V. Tsvetkov ◽  
L.N. Andreeva ◽  
A.Yu. Bilibin ◽  
S.S. Skorokhodov
Keyword(s):  
Liquid Crystals ◽  
Electric Fields ◽  
Elastic Deformations ◽  
Polymer Liquid ◽  
Polymer Liquid Crystals ◽  
Aromatic Polyesters

scholarly journals Equation of state for polymer liquid crystals: Theory and experiment

1999 ◽  
Vol 59 (1) ◽  
pp. 999-1008 ◽  
Author(s):  
H. H. Strey ◽  
V. A. Parsegian ◽  
R. Podgornik
Keyword(s):  
Liquid Crystals ◽  
Equation Of State ◽  
Polymer Liquid ◽  
Polymer Liquid Crystals ◽  
Theory And Experiment
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