期刊
JOURNAL OF NON-CRYSTALLINE SOLIDS
卷 499, 期 -, 页码 107-116出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2018.07.006
关键词
Polymer-liquid crystal composite membranes; Micro-Raman studies; X-ray photoelectron spectroscopy; Thermal studies; Conductivity studies and dielectric properties
资金
- Indo-Bulgarian joint research project - Ministry of Education and Science, NSFBulgaria [DNTS/In-01/4/2013]
- Ministry of Education and Science, NSFBulgaria [DFNI-TO2/18]
- Ministry of Economy of Bulgaria [BG161PO003-1.2.04-0027-C0001]
A series of flexible and free standing composite membranes based on polyethylene oxide (PEO) and the nematic liquid crystal (LC) E8 were prepared using solution casting technique. The effect of the LC concentration on the structural modifications of PEO/E8 LC composites was investigated by Fourier transform IR spectroscopy, X-ray photoelectron spectroscopy (XPS), micro-Raman and differential scanning calorimetry (DSC). The electro-chemical impedance measurements were performed in the applied frequency range of 0.1 Hz - 2 MHz. The dielectric properties of the PEO/E8 LC membranes were studied upon variation of the LC concentration and results were analyzed by Kohlrausch - Williams - Watts and Havriliak - Negami formalisms. These investigations pointed out that LC doped polymeric membranes display remarkable features that could be interested for their use as novel composite electrolytes for rechargeable metal ions batteries.
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