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Preparation and physical characterization of polyacrylamide coated magnetite particles
Author(s) -
Hong Min Ki,
Park Bong Jun,
Choi Hyoung Jin
Publication year - 2007
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200777350
Subject(s) - polyacrylamide , magnetite , materials science , chemical engineering , rheometer , suspension (topology) , polymer , nanoparticle , particle (ecology) , characterization (materials science) , magnetic nanoparticles , magnetite nanoparticles , coating , precipitation , aqueous solution , composite material , nanotechnology , polymer chemistry , chemistry , rheology , metallurgy , organic chemistry , oceanography , physics , mathematics , homotopy , geology , meteorology , pure mathematics , engineering
Magnetite nanoparticles, which were synthesized by a co‐precipitation method using aqueous Fe 3+ /Fe 2+ solution with base, were coated with polyacrylamide via inverse suspension polymerization. The fabricated particles were characterized by TEM and SEM. Ultimately, the fabricated magnetic composite particles were adopted for magentorheological (MR) fluid application. The MR properties were measured using a rotational rheometer, exhibiting that the polymer coating contributed the improvement of particle size as well as dipersion stability for applying the magnetite into the MR application. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)