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Modification of superparamagnetic iron oxide nanoparticles with poly(diallyldimethylammonium chloride) at air atmosphere
Author(s) -
Li Fengyan,
Yang Qingyu,
Qiu Fang,
Liu Yong
Publication year - 2016
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3834
Subject(s) - superparamagnetism , materials science , zeta potential , nanocomposite , iron oxide , oxide , fourier transform infrared spectroscopy , chemical engineering , nanoparticle , particle size , iron oxide nanoparticles , coprecipitation , transmission electron microscopy , inorganic chemistry , analytical chemistry (journal) , nuclear chemistry , nanotechnology , metallurgy , magnetization , chemistry , organic chemistry , quantum mechanics , magnetic field , engineering , physics
Superparamagnetic iron oxide particles with average size less than 20 nm were prepared by chemical co‐precipitation method in the air atmosphere. After that, polydimethyldiallyl ammonium chloride (PDDA) was used for wrapping iron oxide particles to obtain the core/shell nanocomposites. The parameters influencing properties of iron oxide particles and iron oxide/PDDA nanocomposites were investigated and optimized. The prepared iron oxide and nanocomposites were characterized by X‐ray diffraction (XRD) measurement, transmission electron microscopy (TEM), particle size and Zeta potential analyzer, Fourier transform infrared (FTIR) spectroscopy, and vibrating sample magnetometry (VSM), respectively. It was found that the iron oxide particles are cubic inverse spinel Fe 3 O 4 with spherical shape. Superparamagnetic behavior of Fe 3 O 4 with 73.114 emu/g is produced with NH 4 OH as precipitator, and decreased to 58.583 emu/g for Fe 3 O 4 /PDDA nanocomposites. The Zeta potential of nanocomposites is positive value. The results showed that Fe 3 O 4 /PDDA nanocomposites have excellent future using as a carrier for bonding with some negative charged particles. Copyright © 2016 John Wiley & Sons, Ltd.