Magnetic and Microwave Absorption Properties of Magnetite (Fe3O4)@Conducting Polymer (PANI, PPY, PT) Composites

• Published in: IEEE transactions on magnetics Vol. 53; no. 10; pp. 1 - 8
• Main Authors: Unver, Ibrahim Saim, Durmus, Zehra
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-10-2017; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Absorption; Chemical synthesis; Composite materials; Conducting polymers; Iron oxides; magnetic materials; Magnetic noise; Magnetic properties; Magnetic resonance imaging; Magnetic shielding; Magnetism; Magnetite; Microwave absorption; microwave absorption properties; Nanocomposites; Nanoparticles; Polyanilines; Polymer coatings; Polymer matrix composites; Polymers; Polypyrroles; Polythiophene; Wave reflection; X-ray diffraction
• ISSN: 0018-9464; 1941-0069; 1941-0069
• DOI: 10.1109/TMAG.2017.2716349

Magnetite nanoparticles (Fe 3 O 4 NPs) were synthesized via reflux co-precipitation method and coated with various polymeric media of polypyrrole (PPY), polyaniline (PANI), and polythiophene (PT) in the same experiment conditions. The increasing crystallinity and the absence of another phase were investigated from X-ray diffraction experiments. Fe 3 O 4 NPs have spherical shapes and after polymer coating their mean size were found as 11.76, 11.51, and 9.98 nm for Fe 3 O 4 @PPY, Fe 3 O 4 @PANI, and Fe 3 O 4 @PT, respectively. The superparamagnetic nature of composites was observed at room temperature. The electromagnetic (EM) wave reflection loss of samples was analyzed comparatively. It was found that the type of the polymers coated on the magnetite nanoparticles in the same procedure gives slight change in reflection loss of EM waves.