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- Title
Intercalation of Nickel(II) and Iron(II) Metallosupramolecular Polyelectrolytes in Montmorillonite: Nanocomposites and their Electrorheological Properties.
- Authors
Geist, Matthias F.; Peyratout, Claire S.; Kurth, Dirk G.
- Abstract
Abstract: Nanocomposites obtained from the montmorillonite clay (Na0.36(Al1.64Mg0.36)Si4O10(OH)2⋅n H2O) and metallosupramolecular polyelectrolytes (MEPE) with iron(II) and nickel(II) are prepared by an aqueous intercalation reaction. Intercalation of MEPE in the interlayer structure of montmorillonite (MMT) is confirmed by different analytical techniques including powder X‐ray diffraction, FTIR spectroscopy, and thermal analysis. We note a difference in the intercalation behavior between NiII and FeII. The intercalation of Fe‐MEPE is hindered by traces of Fe2O3 in MMT. Removal of the impurities with sodium dithionite and citrate buffer makes Fe‐MEPE‐MMT available. Electrorheological measurements reveal for both nanocomposites a distinctive ER effect. The effect depends on the intercalated coordination polymer. Dielectric spectroscopy shows a different polarization for Fe‐MEPE‐MMT and Ni‐MEPE‐MMT.
- Subjects
MONTMORILLONITE; POLYELECTROLYTES; SODIUM dithionite; DIELECTRIC properties; NANOCOMPOSITE materials; FOURIER transform infrared spectroscopy
- Publication
ChemNanoMat, 2015, Vol 1, Issue 7, p489
- ISSN
2199-692X
- Publication type
Article
- DOI
10.1002/cnma.201500065