Textural, Structural and Electrical Characterizations of EMIMAc Silica Ionogels and Their Corresponding Aerogels

Nadjette Bengourna, Florence Despetis, Laurent Bonnet, R'emi Courson, Pierre Solignac, Hamid Satha, Nathalie Olivi-Tran


Silica ionogels were synthesized from tetramethoxysilane (TMOS ),methyltrimethoxysilane (MTMS ) and 1-ethyl-2-methylimidazolium Acetate (EMIMAc: Ionic Liquid) in different proportions .The textural characterizations showed an effect of these concentrations on the corresponding aerogels: pore size distributions and effective surfaces. The structure of the aerogels was measured with a SAXS (Small- Angle XRay Scattering) apparatus and was typical of acid catalyzed aerogels. Conductivity voltage measurements, operated on the ionogels, were carried out using an electrical 4 wire-electrodes set up. The electrical voltage temporal response of the EMIMAc silica ionogel was modelled by a RLC series circuit which characteristics depended on the synthesis.

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DOI: http://dx.doi.org/10.5539/apr.v6n4p16

Applied Physics Research   ISSN 1916-9639 (Print)   ISSN 1916-9647 (Online)

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