Magnetic properties of iron–carbon nanocomposites obtained by laser pyrolysis in specific configurations

Schinteie, G.; Kuncser, V.; Palade, P.; Dumitrache, F.; Alexandrescu, R.; Morjan, I.; Filoti, G.

doi:10.1016/j.jallcom.2013.02.126

Cited by 20 publications

(11 citation statements)

References 21 publications

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“…In addition to these popular methods, MNPs have been successfully synthesized by means of other techniques including chemical vapor deposition, combustion, carbon arc, electrochemical synthesis, laser pyrolysis techniques, microbial synthesis and in lab‐on‐a‐chip systems, among others. Representative published reviews concerning existing synthesis routes to obtain MNPs along with their physicochemical properties, toxicity, and biocompatibility can be found in refs.…”

Section: Magnetic Npsmentioning

confidence: 99%

Advances in Magnetic Nanoparticles for Biomedical Applications

Cardoso

Francesko

Ribeiro

et al. 2017

Adv Healthcare Materials

525

330

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Magnetic nanoparticles (NPs) are emerging as an important class of biomedical functional nanomaterials in areas such as hyperthermia, drug release, tissue engineering, theranostic, and lab-on-a-chip, due to their exclusive chemical and physical properties. Although some works can be found reviewing the main application of magnetic NPs in the area of biomedical engineering, recent and intense progress on magnetic nanoparticle research, from synthesis to surface functionalization strategies, demands for a work that includes, summarizes, and debates current directions and ongoing advancements in this research field. Thus, the present work addresses the structure, synthesis, properties, and the incorporation of magnetic NPs in nanocomposites, highlighting the most relevant effects of the synthesis on the magnetic and structural properties of the magnetic NPs and how these effects limit their utilization in the biomedical area. Furthermore, this review next focuses on the application of magnetic NPs on the biomedical field. Finally, a discussion of the main challenges and an outlook of the future developments in the use of magnetic NPs for advanced biomedical applications are critically provided.

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Section: Magnetic Npsmentioning

confidence: 99%

Advances in Magnetic Nanoparticles for Biomedical Applications

Cardoso

Francesko

Ribeiro

et al. 2017

Adv Healthcare Materials

525

330

View full text Add to dashboard Cite

show abstract

“…Multifunctional magnetic polymer composites can be used in various fields, such as in microwave absorbers, biomedicine, magnetic recording materials, information technology, energy storage devices, magnetic resonance imaging, magnetic sensors, catalysis, drug delivery, telecommunications, and environmental remediation . Magnetic polymer nanocomposites can be obtained by the introduction of a range of magnetic elements, such as iron, nickel, and cobalt, in a diamagnetic polymer matrix with different polymerization techniques . Although iron is a conventionally used magnetic material, the easy oxidation of iron NPs is a hot topic of discussion when NPs are used as fillers in polymer matrixes.…”

Section: Introductionmentioning

confidence: 99%

Polypropylene nanocomposites with electrical and magnetic properties

Nisar

Bernd

Filho

et al. 2018

J of Applied Polymer Sci

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The magnetic and conducting properties of polypropylene (PP)-reduced graphene oxide (rGO)-carbon nanotube with iron (CNT-Fe) nanocomposites prepared by melt mixing were studied. CNT-Fes were synthesized by the pyrolysis of sawdust, and rGO was produced from graphite flakes. The combination of these two materials was used to produce magnetic and conducting properties in a diamagnetic and insulating PP matrix with the addition of a small amount of filler. A constant and minute amount of CNT-Fes was sufficient to introduce magnetic characteristics to the PP matrix. A variable amount of rGO was used, and the percolation threshold was achieved with the use of only 2.1 wt % rGO. All samples reached magnetic saturation at about 4.2 kOe, with an identical coercivity of 150 Oe and a normalized remnant magnetization of 0.14. Thermogravimetric and differential scanning calorimetry analyses showed enhancements in the maximum degradation temperature, melting temperature, crystallization temperature, and crystallinity. The nanocomposites showed better mechanical and barrier properties than the neat polymer. The novelty of this study was the use of a filler derived from waste combined with rGO to obtain a thermoplastic nanocomposite with both magnetic and conducting properties at room temperature. V C 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46820.

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“…Furthermore, magnetic polymer nanocomposites have also attracted the interest of both academic and industrial researchers. Magnetic polymer nanocomposites can be obtained by the incorporation of magnetic elements such as nickel, cobalt, and iron into a non‐magnetic polymer matrix by using different polymerization methods, including in situ polymerization, surface‐initiated polymerization, solution blending, ball milling, surface wetting methods, and ion exchange techniques . Although iron‐based magnetic nanoparticles (NPs) are most‐abundantly used, there are problems in their use owing to easy oxidation and aggregation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of high‐density polyethylene/rGO‐CNT‐Fe nanocomposites with outstanding magnetic and electrical properties

Nisar

Bergmann

Geshev

et al. 2017

J of Applied Polymer Sci

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Semi-conducting polyethylene (PE) nanocomposites with outstanding magnetic properties at room temperature were synthesized. These exceptional properties, for a diamagnetic and insulating matrix as PE, were obtained by polymerizing ethylene in the presence of a catalytic system formed by a metallocene catalyst supported on a mixture of reduced graphene oxide (rGO) and carbon nanotubes with encapsulated iron (CNT-Fe). It was used a constant and very low amount of CNT-Fe, obtained by vapor chemical deposition using ferrocene. The percolation threshold, to achieve conductivity, was obtained using a variable amount of rGO. The nanocomposites were semiconductors with the addition of 2.8 wt % and 6.0 wt % of the filler, with electrical conductivities of 4.99 3 10 26 S cm 21 and 7.29 3 10 24 S cm 21 , respectively. Very high coercivity values of 890-980 Oe at room temperature were achieved by the presence of only 0.04-0.06 wt % of iron in the nanocomposites. The novelty of this work is the production of a thermoplastic with both, magnetic and electric properties at room temperature, by the use of two fillers, that is rGO and CNT-Fe. The use of a small amount of CNT-Fe to produce the magnetic properties and variable amount of rGO to introduce the electrical conductivity in PE matrix let to balance both properties. The encapsulation strategy used to obtain Fe in CNT, protect Fe from easy oxidation and aggregation.

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Magnetic properties of iron–carbon nanocomposites obtained by laser pyrolysis in specific configurations

Cited by 20 publications

References 21 publications

Advances in Magnetic Nanoparticles for Biomedical Applications

Advances in Magnetic Nanoparticles for Biomedical Applications

Polypropylene nanocomposites with electrical and magnetic properties

Synthesis of high‐density polyethylene/rGO‐CNT‐Fe nanocomposites with outstanding magnetic and electrical properties

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