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Graft polymerization synthesis and application of magnetic Fe 3 O 4 /polyacrylic acid composite nanoparticles
Author(s) -
Hong R. Y.,
Pan T. T.,
Han Y. P.,
Zhang S. Z.,
Li H. Z.,
Ding J.
Publication year - 2007
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.25142
Subject(s) - materials science , differential scanning calorimetry , fourier transform infrared spectroscopy , polyacrylic acid , nanoparticle , thermogravimetry , magnetic nanoparticles , coprecipitation , chemical engineering , scanning electron microscope , analytical chemistry (journal) , transmission electron microscopy , polymer chemistry , nuclear chemistry , polymer , composite material , nanotechnology , chemistry , chromatography , physics , engineering , thermodynamics
Abstract Fe 3 O 4 magnetic nanoparticles were prepared by coprecipitation using NH 3 · H 2 O as the precipitating agent, and were characterized by Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and X‐ray powder diffraction (XRD). The compatibility between the Fe 3 O 4 nanoparticles and water were enhanced by grafting acrylic acid onto the nanoparticle surface. FTIR, XRD, thermogravimetry (TG), and differential scanning calorimetry (DSC) were used to characterize the resultant sample. The effects of initiator dosage, monomer concentration, and reaction temperature on the characteristics of surface‐modified Fe 3 O 4 nanoparticles were investigated. Moreover, magnetic fluids (MF), prepared by dispersing the PAA grafted Fe 3 O 4 nanoparticles in water, were characterized using UV–vis spectrophotometer, Gouy magnetic balance, and laser particle‐size analyzer. The rheological characteristics of magnetic fluid were investigated using capillary and rotating rheometers. The MF was added to prepare PVA thin film to improve mechanical properties. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007