The electrical response of novel electrolytic systems composed from polymer polyethylene oxide (PEO) and the mesogenic liquid crystal (LC) mixture E8 was studied upon temperature variation. Free-standing films (thickness of 0.1 mm) of flexible composite electrolytes were produced by solution casting technique from PEO and E8LC at a ratio PEO:E8LC 70:30 wt.% . Such electrolyte systems were measured by complex electrical impedance spectroscopy in the frequency range from 0.5 Hz to 1 MHz of the applied electric field. The thermal behavior of PEO/E8LC electrolyte films were analyzed and interrelated to their structural properties. The temperature-dependent change of ionic conductivity and the corresponding characteristics of PEO/E8LC electrolyte films were compared to those of films of pure E8LC measured under the same experimental conditions. As a result from the inclusion of the mesogenic E8LC, the ionic conductivity of the studied PEO/E8LC blends is considerably increased. Thus, such polymer-LC composite materials are attractive for sensorics, mechatronics and soft electronics applications.
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|Titolo:||ELECTRICAL IMPEDANCE SPECTROSCOPY STUDY OF NOVEL ELECTROLYTIC SYSTEMS COMPOSED FROM POLYMER POLYETHYLENE OXIDE (PEO) AND LIQUID CRYSTAL E8|
|Data di pubblicazione:||2019|
|Appare nelle tipologie:||4.2 Abstract in Atti di convegno|