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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자료유형: 학술저널

저자정보: Jalagonia, Natia (Iv. Javakhishvili Tbilisi State University) Tatrishvili, Tamara (Iv. Javakhishvili Tbilisi State University) Markarashvili, Eliza (Iv. Javakhishvili Tbilisi State University) Aneli, Jimsher (Institute of Macromolecular Chemistry and Polymeric Materials, Iv. Javakhishvili Tbilisi State University) Grazulevicius, Jouzas Vidas (Department of Organic Technology, Kaunas University of Technology) Mukbaniani, Omar (Iv. Javakhishvili Tbilisi State University)

저널정보: 한국화학공학회 화학공학 화학공학 제54권 제1호

발행연도: 2016.1

수록면: 36 - 43 (8page)

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Hydrosilylation reactions of 2.4.6.8-tetrahydro-2.4.6.8-tetramethylcyclotetrasiloxane with allyl butyrate catalyzed by Karstedt's, $H_2PtCl_6$ 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 $CaF_2$, LiF, KF and anhydrous potassium hydroxide in $60-70^{\circ}C$ 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 $3.5{\times}10^{-4}{\sim}6.4{\times}10^{-7}S/cm$.

#Polysiloxanes #Membranes #Cross-Linking #Polymer Electrolyte #Ionic Conductivity

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