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Nanocomposite particles with core‐shell morphology. I. Preparation and characterization of Fe 3 O 4 –poly(butyl acrylate‐styrene) particles via miniemulsion polymerization
Author(s) -
Mahdavian Ali Reza,
Ashjari Mohsen,
Mobarakeh Hamid Salehi
Publication year - 2008
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.28729
Subject(s) - miniemulsion , materials science , emulsion polymerization , polymer chemistry , nanocomposite , acrylate , polymerization , dynamic light scattering , butyl acrylate , chemical engineering , polystyrene , styrene , nanoparticle , polymer , composite material , copolymer , nanotechnology , engineering
Colloidal particles with magnetic properties have become increasingly important both technologically and for fundamental studies. Here, chemical initiator‐free miniemulsion polymerization of styrene and butyl acrylate has been performed for preparation of magnetic nanocomposite particles with the diameter of 81–150 nm in the presence of sodium dodecyl sulfate as surfactant, span 80 as stabilizer, and hexadecane as hydrophobe. The polymerization reaction was initiated and progressed under ultrasonic irradiation, generated by immersed probe into the latex. The key point in achievement of encapsulation of modified Fe 3 O 4 nanoparticles was preparation of a stable colloidal dispersion at the end of the reaction. The obtained products in each step were characterized by FTIR spectroscopy. Dynamic light scattering analysis was used to follow particle size diameter of the samples. Morphology of the particles and formation of core‐shell structure were analyzed by SEM and TEM micrographs, respectively. TGA and magnetometry of the polymeric films confirmed the extent of insertion of used magnetite and their corresponding behavior. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008