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Synthesis And Ionic Conductivity of Siloxane Based Polymer Electrolytes with Propyl Butyrate Pendant Groups
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 Title & Authors
Synthesis And Ionic Conductivity of Siloxane Based Polymer Electrolytes with Propyl Butyrate Pendant Groups
Jalagonia, Natia; Tatrishvili, Tamara; Markarashvili, Eliza; Aneli, Jimsher; Grazulevicius, Jouzas Vidas; Mukbaniani, Omar;
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 Abstract
Hydrosilylation reactions of 2.4.6.8-tetrahydro-2.4.6.8-tetramethylcyclotetrasiloxane with allyl butyrate catalyzed by Karstedt`s, and Pt/C catalyst were studied and 2.4.6.8-tetra (propyl butyrate)-2.4.6.8-tetramethylcyclotetrasiloxane was obtained. The reaction order, activation energies and rate constants were determined. Ringopening polymerization of 2.4.6.8-tetra (propyl butyrate)-2.4.6.8-tetramethylcyclotetrasiloxane in the presence of , LiF, KF and anhydrous potassium hydroxide in temperature range was carried out and methylsiloxane oligomers with regular arrangement of propyl butyrate pendant groups were obtained. The synthesized products were studied by FTIR and NMR spectroscopy. The polysiloxanes were characterized by wide-angle X-ray, gel-permeation chromatography and DSC analyses. Via sol-gel processes of oligomers doped with lithium trifluoromethylsulfonate or lithium bis (trifluoromethylsulfonyl)imide, solid polymer electrolyte membranes were obtained. The dependences of ionic conductivity of obtained polyelectrolytes on temperature and salt concentration were investigated, and it was shown that electric conductivity of the polymer electrolyte membranes at room temperature changed in the range .
 Keywords
Polysiloxanes;Membranes;Cross-Linking;Polymer Electrolyte;Ionic Conductivity;
 Language
English
 Cited by
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