Ultrafine Magnetite Nanopowder: Synthesis, Characterization, and Preliminary Use as Filler of Polymethylmethacrylate Nanocomposites
Magnetite (Fe3O4) nanoparticles prepared by microwave-assisted hydrothermal synthesis have been characterized in terms of morphological and structural features. Electron micrographs collected in both scanning (SEM) and transmission (TEM) modes and evaluations of X-ray powder diffraction (XRD) patter...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Nanotechnology |
| Online Access: | http://dx.doi.org/10.1155/2012/728326 |
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| author | Pietro Russo Domenico Acierno Mariano Palomba Gianfranco Carotenuto Roberto Rosa Antonino Rizzuti Cristina Leonelli |
| author_facet | Pietro Russo Domenico Acierno Mariano Palomba Gianfranco Carotenuto Roberto Rosa Antonino Rizzuti Cristina Leonelli |
| author_sort | Pietro Russo |
| collection | DOAJ |
| description | Magnetite (Fe3O4) nanoparticles prepared by microwave-assisted hydrothermal synthesis have been characterized in terms of morphological and structural features. Electron micrographs collected in both scanning (SEM) and transmission (TEM) modes and evaluations of X-ray powder diffraction (XRD) patterns have indicated the achievement of a monodispersed crystallite structure with particles having an average size around 15–20 nm. Structural investigations by Micro-Raman spectroscopy highlighted the obtainment of magnetite nanocrystals with a partial surface oxidation to maghemite (γ-Fe3O4). Preliminary attention has been also paid to the use of these magnetite nanoparticles as filler for a commercial polymethylmethacrylate resin. Hybrid formulations containing up to 3 wt% of nanoparticles were prepared by melt blending and characterized by calorimetric and thermogravimetric tests. For sake of comparison, same formulations containing commercial Fe3O4 nanoparticles are also reported. Calorimetric characterization indicates an increase of both glass transition temperature and thermal stability of the nanocomposite systems when loaded with the synthesized magnetite nanoparticles rather then loaded with the same amount of commercial Fe3O4. This first observation represents just one aspect of the promising potentiality offered by the novel magnetic nanoparticles when mixed with PMMA. |
| format | Article |
| id | doaj-art-4892af0179a646e8b8ea4ce7442363aa |
| institution | Kabale University |
| issn | 1687-9503 1687-9511 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Nanotechnology |
| spelling | doaj-art-4892af0179a646e8b8ea4ce7442363aa2025-02-03T01:22:32ZengWileyJournal of Nanotechnology1687-95031687-95112012-01-01201210.1155/2012/728326728326Ultrafine Magnetite Nanopowder: Synthesis, Characterization, and Preliminary Use as Filler of Polymethylmethacrylate NanocompositesPietro Russo0Domenico Acierno1Mariano Palomba2Gianfranco Carotenuto3Roberto Rosa4Antonino Rizzuti5Cristina Leonelli6Institute of Chemistry and Technology of Polymers, National Research Council of Italy, Via Campi Flegrei, 34-80072 Pozzuoli, ItalyDepartments of Materials and Production Engineering, University of Naples Federico II, Piazzale Tecchio, 80-80125 Naples, ItalyInstitute for Composite and Biomedical Materials, National Research Council of Italy, Piazzale Tecchio, 80-80125 Naples, ItalyInstitute for Composite and Biomedical Materials, National Research Council of Italy, Piazzale Tecchio, 80-80125 Naples, ItalyDepartment of Materials and Environmental Engineering, University of Modena and Reggio Emilia, Strada Vignolese, 905-41125 Modena, ItalyDepartment of Water Engineering and Chemistry, Polytechnic of Bari, Via Orabona, 4-70125 Bari, ItalyDepartment of Materials and Environmental Engineering, University of Modena and Reggio Emilia, Strada Vignolese, 905-41125 Modena, ItalyMagnetite (Fe3O4) nanoparticles prepared by microwave-assisted hydrothermal synthesis have been characterized in terms of morphological and structural features. Electron micrographs collected in both scanning (SEM) and transmission (TEM) modes and evaluations of X-ray powder diffraction (XRD) patterns have indicated the achievement of a monodispersed crystallite structure with particles having an average size around 15–20 nm. Structural investigations by Micro-Raman spectroscopy highlighted the obtainment of magnetite nanocrystals with a partial surface oxidation to maghemite (γ-Fe3O4). Preliminary attention has been also paid to the use of these magnetite nanoparticles as filler for a commercial polymethylmethacrylate resin. Hybrid formulations containing up to 3 wt% of nanoparticles were prepared by melt blending and characterized by calorimetric and thermogravimetric tests. For sake of comparison, same formulations containing commercial Fe3O4 nanoparticles are also reported. Calorimetric characterization indicates an increase of both glass transition temperature and thermal stability of the nanocomposite systems when loaded with the synthesized magnetite nanoparticles rather then loaded with the same amount of commercial Fe3O4. This first observation represents just one aspect of the promising potentiality offered by the novel magnetic nanoparticles when mixed with PMMA.http://dx.doi.org/10.1155/2012/728326 |
| spellingShingle | Pietro Russo Domenico Acierno Mariano Palomba Gianfranco Carotenuto Roberto Rosa Antonino Rizzuti Cristina Leonelli Ultrafine Magnetite Nanopowder: Synthesis, Characterization, and Preliminary Use as Filler of Polymethylmethacrylate Nanocomposites Journal of Nanotechnology |
| title | Ultrafine Magnetite Nanopowder: Synthesis, Characterization, and Preliminary Use as Filler of Polymethylmethacrylate Nanocomposites |
| title_full | Ultrafine Magnetite Nanopowder: Synthesis, Characterization, and Preliminary Use as Filler of Polymethylmethacrylate Nanocomposites |
| title_fullStr | Ultrafine Magnetite Nanopowder: Synthesis, Characterization, and Preliminary Use as Filler of Polymethylmethacrylate Nanocomposites |
| title_full_unstemmed | Ultrafine Magnetite Nanopowder: Synthesis, Characterization, and Preliminary Use as Filler of Polymethylmethacrylate Nanocomposites |
| title_short | Ultrafine Magnetite Nanopowder: Synthesis, Characterization, and Preliminary Use as Filler of Polymethylmethacrylate Nanocomposites |
| title_sort | ultrafine magnetite nanopowder synthesis characterization and preliminary use as filler of polymethylmethacrylate nanocomposites |
| url | http://dx.doi.org/10.1155/2012/728326 |
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