Blends of a Liquid Crystalline Copolyester with Polyethersulphone
- 1 December 1987
- journal article
- applications
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics
- Vol. 153 (1), 491-500
- https://doi.org/10.1080/00268948708074560
Abstract
Examination of the rheological properties of blends of polyethersulphone (PES) and a liquid crystalline polymer (LCP) has shown an approximately fourfold drop in viscosity at low shear rates for the addition of only 2% LCP. Optical microscopy of sections of extruded pellets (cut parallel and perpendicular to the extrusion axis) has been carried out. It is found that the LCP orientation varies significantly across the pellet. When the thin sections are annealed at temperatures∼300° C the LCP tries to minimise interfacial contact with the PES suggesting a high surface energy.Keywords
This publication has 5 references indexed in Scilit:
- In situ composites: Blends of isotropic polymers and thermotropic liquid crystalline polymersPolymer Engineering & Science, 1987
- Mesophase formation and polymer compatibility. The poly(p-benzamide)-polyacrylonitrile-diluent systemMacromolecules, 1984
- Optical microscopy of banded structures in oriented thermotropic polymersJournal of Materials Science, 1983
- Liquid crystal solutions. Ternary systems involving a nematogenic and a non-nematogenic polymerMacromolecules, 1982
- Statistical Thermodynamics of Mixtures of Rodlike Particles. 5. Mixtures with Random CoilsMacromolecules, 1978