6533b85dfe1ef96bd12bf0ca

RESEARCH PRODUCT

Electro-Hydrodynamic Instabilities in Main Chain Thermotropic Liquid Crystalline Polyesters

Gregory B. KharasGregory B. KharasHans-werner SchmidtHans-werner SchmidtOomman P. ThomasOomman P. ThomasAlexandre BlumsteinAlexandre BlumsteinJ. M. GilliJ. M. GilliP. SixouP. SixouJ. F. PintonJ. F. Pinton

subject

Polyesterchemistry.chemical_classificationMolar masschemistryChemical physicsLiquid crystalElectric fieldRelaxation (NMR)Polymer chemistryPolymerThermotropic crystalInstability

description

Abstract We have investigated the response behavior of the thermotropic nematic polymer, DDA-9, in an electric field. DDA-9 is composed of regularly alternating moieties and flexible spacers. At a critical threshold voltage, dependent on molar mass, these polymers show the onset of instability. The appearance of a (non-fluctuating) striped pattern (Williams domains) is shown and the time of formation and relaxation of these patterns is investigated as a function of applied Voltage.

yearjournalcountryeditionlanguage
1984-03-01Molecular Crystals and Liquid Crystals
https://doi.org/10.1080/01406568408247039