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A biocompatible magnetic film: synthesis and characterization.

Chatterjee J, Haik Y, Chen CJ - Biomagn Res Technol (2004)

Bottom Line: Nanosized iron oxide particles (gamma-Fe2O3, ~7 nm) have been used to produce the magnetic gel.The iron oxide particles are superparamagnetic and the gel film also showed superparamagnetic behavior.CONCLUSION: Magnetic gel made out of crosslinked magnetic nanoparticles in the polymer network was found to be stable and possess the magnetic properties of the nanoparticles.

View Article: PubMed Central - HTML - PubMed

Affiliation: Center for Nanomagnetics and Biotechnology, Florida State University, Tallahassee, Florida 32310, USA. haik@eng.fsu.edu

ABSTRACT
BACKGROUND: 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. METHODS: A biocompatible magnetic gel film has been synthesized using polyvinyl alcohol. The magnetic gel was dried to generate a biocompatible magnetic film. Nanosized iron oxide particles (gamma-Fe2O3, ~7 nm) have been used to produce the magnetic gel. RESULTS: The surface morphology and magnetic properties of the gel films were studied. The iron oxide particles are superparamagnetic and the gel film also showed superparamagnetic behavior. CONCLUSION: Magnetic gel made out of crosslinked magnetic nanoparticles in the polymer network was found to be stable and possess the magnetic properties of the nanoparticles.

No MeSH data available.


AFM micrograph for PVA magnetic film
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Figure 2: AFM micrograph for PVA magnetic film

Mentions: The surface property of these gel films was studied by atomic force microscopy. A thin film was put on a glass slide to observe under the Atomic force microscope (D 3000, Digital Instruments, Santa Barbara). PVA film formed lamellar structures as observed in the micrograph (Fig. 2). Crystalline structure must have formed in the gel itself though it was not clearly observed when microscopy was done on a gel sample and it showed a globular and porous structure along with contrast due to the presence of maghemite in them. The surface of the gel film shows the presence of iron oxide particles in the matrix as observed in the AFM micrograph (Fig. 3).


A biocompatible magnetic film: synthesis and characterization.

Chatterjee J, Haik Y, Chen CJ - Biomagn Res Technol (2004)

AFM micrograph for PVA magnetic film
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC373455&req=5

Figure 2: AFM micrograph for PVA magnetic film
Mentions: The surface property of these gel films was studied by atomic force microscopy. A thin film was put on a glass slide to observe under the Atomic force microscope (D 3000, Digital Instruments, Santa Barbara). PVA film formed lamellar structures as observed in the micrograph (Fig. 2). Crystalline structure must have formed in the gel itself though it was not clearly observed when microscopy was done on a gel sample and it showed a globular and porous structure along with contrast due to the presence of maghemite in them. The surface of the gel film shows the presence of iron oxide particles in the matrix as observed in the AFM micrograph (Fig. 3).

Bottom Line: Nanosized iron oxide particles (gamma-Fe2O3, ~7 nm) have been used to produce the magnetic gel.The iron oxide particles are superparamagnetic and the gel film also showed superparamagnetic behavior.CONCLUSION: Magnetic gel made out of crosslinked magnetic nanoparticles in the polymer network was found to be stable and possess the magnetic properties of the nanoparticles.

View Article: PubMed Central - HTML - PubMed

Affiliation: Center for Nanomagnetics and Biotechnology, Florida State University, Tallahassee, Florida 32310, USA. haik@eng.fsu.edu

ABSTRACT
BACKGROUND: 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. METHODS: A biocompatible magnetic gel film has been synthesized using polyvinyl alcohol. The magnetic gel was dried to generate a biocompatible magnetic film. Nanosized iron oxide particles (gamma-Fe2O3, ~7 nm) have been used to produce the magnetic gel. RESULTS: The surface morphology and magnetic properties of the gel films were studied. The iron oxide particles are superparamagnetic and the gel film also showed superparamagnetic behavior. CONCLUSION: Magnetic gel made out of crosslinked magnetic nanoparticles in the polymer network was found to be stable and possess the magnetic properties of the nanoparticles.

No MeSH data available.