Efficient Dispersion of Magnetite Nanoparticles in the Polyurethane Matrix Through Solution Mixing and Investigation of the Nanocomposite Properties |
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Authors: | Mohsen Ashjari Ali Reza Mahdavian Nadereh Golshan Ebrahimi Yasamin Mosleh |
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Affiliation: | (1) Polymer Science Department, Iran Polymer and Petrochemical Institute, P.O. Box 14965-115, Tehran, Iran;(2) Department of Chemical Engineering, Tarbiat Modares University, P.O. Box 14115-111, Tehran, Iran; |
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Abstract: | Recent studies on inorganic/polymer nanocomposites have shown enhancements in thermal, mechanical, and chemical properties
over the neat polymer without compromising density, toughness, and processibility. When nanoparticles are incorporated into
the polymer matrix, significant enhancements in thermal and mechanical properties of the nanocomposite are observed. The present
study is focused on the preparation and characterization of nanosize magnetite-reinforced PU composites, which induces magnetic
properties to a specific thermoplastic polyurethane elastomer. The nanocomposites are prepared and the effects of magnetite
content on thermal, mechanical, and magnetic properties of the nanocomposites are evaluated. Ultrasonication was used to disperse
the nanoparticles and break up any large clumps and aggregates and followed by mechanical mixing. The magnetic nanocomposites
were characterized by FT-IR spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and vibrating
sample magnetometry (VSM). Characterization of the magnetic nanocomposite by FT-IR showed a successful incorporation of magnetite
nanoparticles into the polymeric matrix. TGA and magnetometry of the magnetic nanocomposites revealed the amount of magnetite
that was incorporated into the polymeric phase. Finally, the corresponding magnetization behavior of the nanocomposites was
studied. |
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