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

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 an...

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Bibliographic Details
Published in:Journal of applied polymer science 2021-09, Vol.138 (36), p.n/a
Main Authors: Serdiuk, Vitalii, Shevchuk, Oleh, Bukartyk, Natalya, Kovalenko, Tetiana, Borysiuk, Anatolii, Tokarev, Viktor
Format: Article
Language:English
Subjects:
Biocompatibility
Copolymers
Elongation
Iron oxides
Magnetic measurement
Magnetic properties
Magnetic saturation
Magnetite
Materials science
Mechanical properties
Nanocomposites
Nanoparticles
nanoparticles, nanowires and nanocrystals
Polymers
Polyvinyl alcohol
synthesis and processing techniques
Tensile strength
Thermal analysis
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Summary: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.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.50928