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Physical Properties of Lithium Co-polyelectrolyte Based on Imidazolium and Ammonium-type Ionic Liquids

  • Cha, E.H. (College of liberal arts & Science, Hoseo Univ.) ;
  • Lim, S.A. (School of AIBN, Queensland University) ;
  • Kim, D.W. (Dept of chemical Engineering HanYang Univ.) ;
  • Lee, J.K. (College of liberal arts & Science, Hoseo Univ.) ;
  • Park, J.H. (Department of Chemistry, Korea University)
  • Received : 2010.07.30
  • Accepted : 2010.08.17
  • Published : 2010.08.28

Abstract

Lithium co-polyelectrolyte-ionic liquid systems, using poly (lithium 2-acrylamido-2-methyl propanesulfonate; PAMPSLi) and polyvinyl formamid (PVF) were prepared and their electrochemical and physical properties were measured. The conductivity of co-polymer systems, PAMPSLi/PVF/N, N-dimethyl-N-propyl-N-butylammonium tricyanomethanide (PAMPSLi/PVF/$N_{1134}$TCM) and PAMPSLi/PVF/N, N-dimethyl-N-propyl-N-butylammonium dicyanamide (PAMPSLi/PVF/$N_{1134}$DCA) exhibited low viscosity ($N_{1134}$TCM:$N_{1134}$DCA 28.6cP, 28.7cP) and higher conductivity ($2.48{\times}10^{-3}Scm^{-1}$, $2.2{\times}10^{-3}Scm^{-1}$) than homopolymer system. The ionic conductivity PAMPSLi/PVF/1-ethyl-3-methyl imidazolium dicyanamide (PAMPSLi/PVF/emImDCA) exhibited $1.54{\times}10^{-3}Scm^{-1}$ and low viscosity (emImDCA: 28.09cP). High flexibility of imidazolium cation and dissociation of lithium cation from the co-polymer chains were affected by high conductivity and low viscosity.

Keywords

References

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