Ionogels Based on Poly(methyl methacrylate) and Metal-Containing Ionic Liquids: Correlation between Structure and Mechanical and Electrical Properties

Int J Mol Sci. 2016 Mar 16;17(3):391. doi: 10.3390/ijms17030391.


Ionogels (IGs) based on poly(methyl methacrylate) (PMMA) and the metal-containing ionic liquids (ILs) bis-1-butyl-3-methlimidazolium tetrachloridocuprate(II), tetrachloride cobaltate(II), and tetrachlorido manganate(II) have been synthesized and their mechanical and electrical properties have been correlated with their microstructure. Unlike many previous examples, the current IGs show a decreasing stability in stress-strain experiments on increasing IL fractions. The conductivities of the current IGs are lower than those observed in similar examples in the literature. Both effects are caused by a two-phase structure with micrometer-sized IL-rich domains homogeneously dispersed an IL-deficient continuous PMMA phase. This study demonstrates that the IL-polymer miscibility and the morphology of the IGs are key parameters to control the (macroscopic) properties of IGs.

Keywords: ionic conductivity; ionic liquids; ionogels; mechanical properties; microstructure; phase separation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Electric Conductivity
  • Gels / chemical synthesis
  • Gels / chemistry*
  • Ionic Liquids*
  • Mechanical Phenomena
  • Metals*
  • Molecular Structure
  • Polymethyl Methacrylate*


  • Gels
  • Ionic Liquids
  • Metals
  • Polymethyl Methacrylate