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Preparation and characterization of nickel–polystyrene nanocomposite by ultrasound irradiation
Author(s) -
Kumar R. Vijaya,
Koltypin Yu.,
Palchik O.,
Gedanken A.
Publication year - 2002
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.10930
Subject(s) - polystyrene , nanocomposite , materials science , superparamagnetism , coercivity , nickel , nanoparticle , magnetometer , magnetization , chemical engineering , composite material , nanotechnology , polymer , metallurgy , magnetic field , physics , quantum mechanics , engineering , condensed matter physics
Well‐dispersed nickel nanoparticles in polystyrene were obtained by a sonochemical method. The properties of the as‐prepared nanocomposite materials were characterized by XRD, TEM, EDAX, TGA, DSC, and a vibrating sample magnetometer (VSM). The nickel particles were 5 nm in diameter and were very well dispersed in the polystyrene. The magnetization measurements established that the as‐prepared nanocomposite materials are superparamagnetic due to their small size. The saturation magnetization (30.1 emu/g) and coercivity (5 Oe) of the materials were significantly smaller than were those of the bulk nickel, reflecting the nanoparticle nature. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 160–165, 2002