Conductivity studies of grafted natural rubber and ionic liquid electrolyte systems

• Main Authors: Rahmat, M.F., Alias, Yatimah, Basirun, Wan Jefrey, Aldous, L., Hardacre, C.
• Format: Article
• Published: Faculty of Science, University of Malaya 2009
• Subjects: QD Chemistry
• Online Access: http://eprints.um.edu.my/7557/; http://www.myjurnal.my/filebank/published_article/12344/art_6.pdf

Ionic liquids containing the 1 -butyl- 1-methylpyrrolidinium ([C 4mPyrr]+) cation and bis(trifluoromethanesulfonyl)imide ([NTf 2]") anion have been synthesized and incorporated in 49% PMMA grafted natural rubber together with lithium salts to obtain solid polymer electrolytes (SPEs). The resultant SPEs obtained, are freestanding, flexible film and translucent and show conductivity over a wide range of 10 -3-10 -5 S cm -1. Polymer electrolytes containing 80% of (MG49:LiCF 3S0 3) and 20% of [C 4mPyrr] [NTf 2] showed the highest conductivity of 2.11 x 10 -3 S cm -1 at room temperature. The examination of the ion- polymer interactions and ionic conductivity are discussed and investigated by FT-IR and Electrochemical Impedance Spectroscopy (EIS) respectively.