Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1804171 | Journal of Magnetism and Magnetic Materials | 2007 | 5 Pages |
Abstract
A new characterization method for hydrogels based on the relaxation behavior of superparamagnetic nanoparticles (MNPs) is proposed. MNPs are incorporated in the hydrogel to examine its network properties. By analyzing their relaxation behavior, incorporated and mobile nanoparticles can be studied. In the case of mobile nanoparticles, the microviscosity of the hydrogel can be determined. Thus, this method allows the studying of gelation as well as the degradation process of hydrogels. Furthermore, the hydrogel can have any shape (e.g. microspheres or larger blocks) and no sample preparation is needed, avoiding artefacts.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Erik Heim, Steffen Harling, Kai Pöhlig, Frank Ludwig, Henning Menzel, Meinhard Schilling,