Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 305, Issue 1, Pages 12-15Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2005.11.021
Keywords
superparamagnetic iron nanoparticles (SPION); nanocomposites; nanoparticles application; magnetic fluid; magnetic gel
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Very promising nanoparticles for biomedical applications or in medical drug targeting are superparamagnetic nanoparticles based on a core consisting of iron oxides (SPION) that can be targeted through external magnets. Polyvinyl alcohol (PVA) is a unique synthetic biocompatible polymer that can be chemically cross-linked to form a gel. Biotechnology applications of magnetic gels include biosensors, targeted drug delivery, artificial muscles and magnetic buckles. These gels are produced by incorporating magnetic materials in the polymer composites. In this paper we report the synthesis of an aqueous ferrofluid and the preparation of a biocompatible magnetic gel with polyvinyl alcohol and glutharaldehyde (GTA). HClO4 was used to induce the peptization since this kind of ferrofluid does not have surfactant. The magnetic gel was dried to generate a biocompatible film. (c) 2005 Elsevier B.V. All rights reserved.
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