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Synthesis and properties of magnetite nanoparticles with peroxide‐containing polymer shell and nanocomposites based on them
Author(s) -
Serdiuk Vitalii,
Shevchuk Oleh,
Bukartyk Natalya,
Kovalenko Tetiana,
Borysiuk Anatolii,
Tokarev Viktor
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50928
Subject(s) - materials science , superparamagnetism , magnetite , polymer , nanoparticle , nanocomposite , polyvinyl alcohol , copolymer , chemical engineering , coprecipitation , composite number , peroxide , magnetic nanoparticles , polymer chemistry , composite material , magnetization , nanotechnology , chemistry , organic chemistry , physics , quantum mechanics , magnetic field , engineering , metallurgy
Magnetite nanoparticles (Fe 3 O 4 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 Fe 3 O 4 NPs possess superparamagnetic properties. Their specific saturation magnetization decreases gradually from 65 to 54 A·m 2 ·kg −1 with increasing PCC concentration owing to the surface spin pinning effect caused by a polymer shell. The average sizes of Fe 3 O 4 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 Fe 3 O 4 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.