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

Published online by Cambridge University Press:  21 February 2011

Witold Brostow ,
Theodore S. Dziemianowicz ,
Michael Hess  and
Robert Kosfeld
Witold Brostow
Affiliation:
Center for Materials Characterization and Department of Chemistry, University of North Texas, Denton, TX 76203-5371
Theodore S. Dziemianowicz
Affiliation:
Himont U.S.A., Inc., 800 Greenbank Road, Wilmington, DE 19808
Michael Hess
Affiliation:
Center for Materials Characterization and Department of Chemistry, University of North Texas, Denton, TX 76203-5371 FB6-Physikalische Chemie, Universitāt Duisburg, Postfach 10 16 29, D-4100 Duisburg 1, Federal Republic of, Germany
Robert Kosfeld
Affiliation:
FB6-Physikalische Chemie, Universitāt Duisburg, Postfach 10 16 29, D-4100 Duisburg 1, Federal Republic of, Germany
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Abstract

This 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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 171: Symposium O – Polymer Based Molecular Composites , 1989 , 177
Copyright
Copyright © Materials Research Society 1990

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References

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