Dielectric properties of ternary composites of triblock polymer surfactant, liquid crystal and organic solvent

Dielectric properties of ternary composites of triblock polymer surfactant, liquid crystal and organic solvent

Dielectric spectroscopy, at room temperature (20°C), is used to study the dielectric response of ternary mixtures of commercial nematic liquid crystal mixtures E7 and E33, an organic solvent N-Methyl-2-Pyrrolidone (NMP) and a triblock polymers in the frequency range from 0.01 Hz to 1 MHz. The result...

Full description

Bibliographic Details
Main Authors: M. R. Fisch, Clinton Braganza, L. C. Chien, R. G. Petschek
Format: Article
Language:English
Published: World Scientific Publishing 2014-07-01
Series:Journal of Advanced Dielectrics
Subjects:
Emulsion
dielectric properties
liquid crystal
Online Access:http://www.worldscientific.com/doi/pdf/10.1142/S2010135X14500222
Description
Summary:Dielectric spectroscopy, at room temperature (20°C), is used to study the dielectric response of ternary mixtures of commercial nematic liquid crystal mixtures E7 and E33, an organic solvent N-Methyl-2-Pyrrolidone (NMP) and a triblock polymers in the frequency range from 0.01 Hz to 1 MHz. The results indicate a dielectric relaxation in the hectohertz region. Individually, both E7 and NMP have rather large low frequency conductivities; however, the low frequency (0.01–10 Hz) behavior of the mixtures has no such behavior. We attribute this behavior to an ion getter effect of the triblock polymer surfactant. Optimized ternary mixtures obtain a real dielectric constant near 230, and loss tangent less than 0.05 at frequencies near 10 mHz.
ISSN:2010-135X
2010-1368

Similar Items