Effect of polymer matrix on the magnetic properties of polymer bonded magnets filled Fe3O4 nanoparticles

Mousavian, Saman; Ebadi‐Dehaghani, Hassan; Ashouri, Davoud; Sadeghipour, Hojjatollah; Jabbari, Fatemeh

doi:10.1007/s10965-012-9991-5

Cited by 16 publications

(4 citation statements)

References 23 publications

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“…34 There are also several reports which revealed improved mechanical (like tensile strength, yield stress and damping properties, compressive modulus), magnetic, rheological and magnetorheological properties of different magnetic nanocomposites. [35][36][37][38][39][40] Nanowire/nanober based MREs are expected to be superior compared to the nanoparticles based MREs because of their large aspect ratio which enables them to form more efficient interconnected 3D network at the lower concentrations than that of the nanoparticles. Excellent magnetic properties like greater saturation magnetization, coercivity, remnant magnetization and magnetic anisotropy have been reported for ber, nanowire and nanochains containing PDMS nanocomposites compared to that of nanoparticles lled nanocomposites at low ller loading.…”

Section: Introductionmentioning

confidence: 99%

Superior elastomeric nanocomposites with electrospun nanofibers and nanoparticles of CoFe₂O₄for magnetorheological applications

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Superior elastomeric nanocomposites with electrospun nanofibers and nanoparticles of CoFe₂O₄for magnetorheological applications

et al. 2015

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“…Polymers of various nature are used for the manufacturing magnetic nanocomposites depending on the scope of application – from polybutadiene, polystyrene, polymethylmetacrylate and other petroleum‐based polymers to biopolymers such as chitosan, alginate etc 25–28 . Polyvinyl alcohol (PVA) was chosen for present study because it is known as an auspicious material for diverse applications due to its remarkable properties: biocompatibility and biodegradability, non‐toxicity, high water solubility, thermal stability 29,30 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of magnetite nanoparticles with peroxide‐containing polymer shell and nanocomposites based on them

Serdiuk

Shevchuk

Bukartyk

et al. 2021

J of Applied Polymer Sci

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Magnetite nanoparticles (Fe3O4 NPs) with peroxide‐containing polymer shell have been synthesized using the method of coprecipitation from the mixture solutions of Fe (II) and Fe (III) salts in the presence of peroxide‐containing copolymer (PCC). Polymer shell presence has been proved by elemental and complex thermal analysis. Synthesized Fe3O4 NPs possess superparamagnetic properties. Their specific saturation magnetization decreases gradually from 65 to 54 A·m2·kg−1 with increasing PCC concentration owing to the surface spin pinning effect caused by a polymer shell. The average sizes of Fe3O4 NPs estimated from the data of XRD analysis and magnetic measurements are in the range of 9–12 nm. The NP sizes determined by the DLS method lie in the range of 150–270 nm; this result is significantly larger than the sizes estimated by the two aforementioned methods evidencing a tendency for Fe3O4 NPs toward self‐association. Cross‐linked composite films based on polyvinyl alcohol have been obtained via radical curing initiated by the PCC shell of nanoparticles. The resulting composite films are magnetically sensitive films with rather high physico‐mechanical properties (tensile strength reaches 48–67 MPa and relative elongation – 4%–21% depending on cross‐linking degree), a priori non‐toxic and biocompatible, which makes them promising materials for various applications.

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“…Therefore, researchers have paid more attention to improve working temperature of bonded magnets by developing heat-resistant bonder. For instance, polyamide-12 [6], polycarbonate [7], nylon 66 [8], polyamide 6 [9] have been widely used. However, these polymers used as bonders cannot resist higher temperature above 150 o C [10].…”

Section: Introductionmentioning

confidence: 99%

Comparison and Analysis of Sodium Silicate and Epoxy Bonded NdFeB Magnets

Yin

Liu

et al. 2016

MSF

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Sodium silicate bonded and epoxy bonded magnetic NdFeB materials are fabricated, respectively. The magnetic properties, temperature coefficient, heat-corrosion and compressive strength of both bonded magnets are investigated. Results reveal that sodium silicate bonded magnet has a similar comprehensive property to epoxy bonded one. Compared to the epoxy bonded magnets, the sodium silicate bonded NdFeB has better temperature coefficient between 20 and 100 °C. The α value of the sodium silicate bonded NdFeB is-0.127 %/°C while the β value is-0.275 %/°C between 20 and 200 °C. DSC thermogram shows that sodium silicate as a bonder in magnet could exist at a higher temperature (above 1000 °C), which is far bigger than the curie point of NdFeB magnet powder. The weight gains of sodium silicate bonded magnet obtained in heat-corrosion resistance test are smaller than those of epoxy bonded one. Compressive strength test shows that sodium silicate bonded magnet has a larger compressive strength (35 MPa) than that of epoxy bonded magnet (27 MPa). Compared to the epoxy, the sodium silicate as bonder in the bonded magnet shows more compact. As a result, the sodium silicate bonded NdFeB bears better magnetic properties, temperature coefficient, heat-corrosion resistant and compressive strength.

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Effect of polymer matrix on the magnetic properties of polymer bonded magnets filled Fe3O4 nanoparticles

Cited by 16 publications

References 23 publications

Superior elastomeric nanocomposites with electrospun nanofibers and nanoparticles of CoFe₂O₄for magnetorheological applications

Superior elastomeric nanocomposites with electrospun nanofibers and nanoparticles of CoFe₂O₄for magnetorheological applications

Synthesis and properties of magnetite nanoparticles with peroxide‐containing polymer shell and nanocomposites based on them

Comparison and Analysis of Sodium Silicate and Epoxy Bonded NdFeB Magnets

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Effect of polymer matrix on the magnetic properties of polymer bonded magnets filled Fe3O4 nanoparticles

Cited by 16 publications

References 23 publications

Superior elastomeric nanocomposites with electrospun nanofibers and nanoparticles of CoFe2O4for magnetorheological applications

Superior elastomeric nanocomposites with electrospun nanofibers and nanoparticles of CoFe2O4for magnetorheological applications

Synthesis and properties of magnetite nanoparticles with peroxide‐containing polymer shell and nanocomposites based on them

Comparison and Analysis of Sodium Silicate and Epoxy Bonded NdFeB Magnets

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Product

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Superior elastomeric nanocomposites with electrospun nanofibers and nanoparticles of CoFe₂O₄for magnetorheological applications

Superior elastomeric nanocomposites with electrospun nanofibers and nanoparticles of CoFe₂O₄for magnetorheological applications