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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 24, 2014
Accepted June 9, 2015

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Synthesis And Ionic Conductivity of Siloxane Based Polymer Electrolytes with Propyl Butyrate Pendant Groups

Natia Jalagonia^{1 2} Tamara Tatrishvili^{1 2} Eliza Markarashvili^{1 2} Jimsher Aneli³ Jouzas Vidas Gražulevičius⁴ and Omar Mukbaniani^{1 2†}

Jalagonia N Tatrishvili T Markarashvili E Aneli J Grazulevicius JV Mukbaniani O

¹Iv. Javakhishvili Tbilisi State University, I. Chavchavadze Ave., 1, Tbilisi 0179, Georgia ²Institute of Macromolecular Chemistry and Polymeric Materials, Iv. Javakhishvili Tbilisi State University, I. Chavchavadze Ave., 13, Tbilisi 0179, Georgia ³Institute of Macromolecular Chemistry and Polymeric Materials, Iv. Javakhishvili Tbilisi State University, I. Chavchavadze Ave., 13, Tbilisi 0179, Georgia, Korea ⁴Department of Organic Technology, Kaunas University of Technology, Radvilenu pl. 19, LT-50254 Kaunas, Lithuania

Korean Chemical Engineering Research, February 2016, 54(1), 36-43(8), 10.9713/kcer.2016.54.1.36 Epub 12 February 2016

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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, H2PtCl6 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 CaF2, LiF, KF and anhydrous potassium hydroxide in 60-70 oC 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 3.5×10-4~6.4×10-7 S/cm.

Keywords

Polysiloxanes Membranes Cross-Linking Polymer Electrolyte Ionic Conductivity

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