Cobalt Ferrite Nanoparticles as Multifunctional Cross-Linkers in PAAm Ferrohydrogels
Macromolecules2011Vol. 44(8), pp. 2990–2999
Citations Over TimeTop 10% of 2011 papers
Renate Messing, Natalia Frickel, L. Belkoura, R. Strey, Helene Rahn, Stefan Odenbach, Annette M. Schmidt
Abstract
Ferrohydrogels are synthesized by incorporation of magnetic CoFe2O4 nanoparticles into a polyacylamide hydrogel network during the polymerization process by utilizing different cross-linking units. Conventional cross-linked ferrohydrogels, using a molecular cross-linker, are compared to those obtained by our new approach where the magnetic particles, surface-functionalized with methacylic groups, serve as sole, multifunctional cross-linkers. Both experimental series are analyzed with regard to their swelling behavior. The novel composite network is examined with respect to the cross-linkage, the network homogeneity, and the network architecture by various experimental techniques.
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