Nanocomposites Derived from Montmorillonite and Metallosupramolecular Polyelectrolytes: Modular Compounds for Electrorheological Fluids

Matthias F. Geist (1) , Kévin Boussois (2) , Agnès Smith (2) , Claire Peyratout (2) , Dirk G. Kurth (1, 3)

1 Chemical Technology of Advanced Materials
2 GEMH - Groupe d'Etudes des Matériaux Hétérogènes
3 Fraunhofer ISC - Fraunhofer Institute for Silicate Research

Nanocomposites made from Na-montmorillonite and metallo-supramolecular polyelectrolytes (MEPE) based on nickel and ditopic bis-terpyridine ligands are prepared by an aqueous synthesis. Intercalation is confirmed by IR-spectroscopy, thermogravimetric analysis, and X-ray powder diffraction. The rheological response in the presence of an electric field of the dispersed nanocomposites in silicone oil is measured with a rheometer. The nanocomposites show a distinct electrorheological effect depending on the concentration and the kind of intercalated species. The effect occurs with a low content of active material while only very small currents are observed.

Domaines: Matériaux

Matthias F. Geist, Kévin Boussois, Agnès Smith, Claire Peyratout, Dirk G. Kurth. Nanocomposites Derived from Montmorillonite and Metallosupramolecular Polyelectrolytes: Modular Compounds for Electrorheological Fluids. Langmuir, 2013, 29 (6), pp.1743-1747. ⟨10.1021/la304657p⟩. ⟨hal-01115644⟩