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Open AccessArticle

Novel Nanocomposites Based on Functionalized Magnetic Nanoparticles and Polyacrylamide: Preparation and Complex Characterization

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University Politehnica of Bucharest, Faculty of Applied Chemistry and Materials Science, 060042 Bucharest, Romania
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National Centre for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
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Advanced Polymer Materials Group, University Politehnica of Bucharest, 060042 Bucharest, Romania
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National Research Center for Food Safety, University Politehnica of Bucharest, 060042 Bucharest, Romania
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Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(10), 1384; https://doi.org/10.3390/nano9101384
Received: 1 September 2019 / Revised: 20 September 2019 / Accepted: 23 September 2019 / Published: 27 September 2019
This paper reports the synthesis and complex characterization of nanocomposite hydrogels based on polyacrylamide and functionalized magnetite nanoparticles. Magnetic nanoparticles were functionalized with double bonds by 3-trimethoxysilyl propyl methacrylate. Nanocomposite hydrogels were prepared by radical polymerization of acrylamide monomer and double bond modified magnetite nanoparticles. XPS spectra for magnetite and modified magnetite were recorded to evaluate the covalent bonding of silane modifying agent. Swelling measurements in saline solution were performed to evaluate the behavior of these hydrogels having various compositions. Mechanical properties were evaluated by dynamic rheological analysis for elastic modulus and vibrating sample magnetometry was used to investigate the magnetic properties. Morphology, geometrical evaluation (size and shape) of nanostructural characteristics and the crystalline structure of the samples were investigated by SEM, HR-TEM and selected area electron diffraction (SAED). The nanocomposite hydrogels will be further tested for the soft tissue engineering field as repairing scaffolds, due to their mechanical and magnetization behavior that can stimulate tissue regeneration. View Full-Text
Keywords: magnetic nanoparticles; polyacrylamide; functionalization; nanocomposite; hydrogel magnetic nanoparticles; polyacrylamide; functionalization; nanocomposite; hydrogel
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Tanasa, E.; Zaharia, C.; Radu, I.-C.; Surdu, V.-A.; Vasile, B.S.; Damian, C.-M.; Andronescu, E. Novel Nanocomposites Based on Functionalized Magnetic Nanoparticles and Polyacrylamide: Preparation and Complex Characterization. Nanomaterials 2019, 9, 1384.

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