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

Nadjette Bengourna (1, 2) , Florence Despetis (1) , Laurent Bonnet (1) , Rémi Courson (3) , Pierre Solignac (1) , Hamid Satha (2) , Nathalie Olivi-Tran (1)

1 L2C - Laboratoire Charles Coulomb
2 Laboratoire d'Analyses Industrielles et Génie des Matériaux
3 LAAS-TEAM - Service Techniques et Équipements Appliqués à la Microélectronique

Silica ionogels were synthesized from tetramethoxysilane (T MOS ),methyltrimethoxysilane (MT MS ) and 1-ethyl- 2-methylimidazolium Acetate (EMI MAc: 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.

Mots clés: ionogels; structure and texture; conductivity

Domaines: Matériaux

Nadjette Bengourna, Florence Despetis, Laurent Bonnet, Rémi Courson, Pierre Solignac, et al.. Textural, Structural and Electrical Characterizations of EMI MAc Silica Ionogels and Their Corresponding Aerogels. Applied Physics Research, 2014, 6 (4), pp.16. ⟨10.5539/apr.v6n4p16⟩. ⟨hal-01061376⟩