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Nanocomposites derived from montmorillonite and metallosupramolecular polyelectrolytes: Modular compounds for electrorheological fluids

: Geist, Matthias F.; Boussois, Kevin; Smith, Agnès C.J.; Peyratout, Claire S.; Kurth, Dirk Günter


Langmuir. The ACS journal of surfaces and colloids 29 (2013), Nr.6, S.1743-1747
ISSN: 0743-7463
ISSN: 1520-5827
Fraunhofer ISC ()
Nanokomposite; Montmorillonit; Elektrorheologische Flüssigkeit; Polyelektrolyte; Supramoleküle

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.