Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 323, Issue 23, Pages 3087-3091Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2011.06.062
Keywords
Block copolymer; Nano-iron oxide; Magnetic nanocomposite; Soft magnetism; Atom transfer radical polymerization
Funding
- Scientific Research Foundation for the Returned Overseas Scholars in Jinan [20100406]
- Youth Scientist Fund of Shandong Province [2007B504007]
- Doctoral Startup Foundation of Shandong Institute of Light Industry
- National Natural Science Foundation of China [50772059]
- foundation for the author of National Excellent Doctoral Dissertation for PR China [200539]
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The use of a block copolymer, poly (styrene)-b-poly (acrylic acid) (PS-b-PAA) to prepare a magnetic nanocomposite was investigated. Poly (styrene)-poly (t-butyl acrylate) block copolymer, being synthesized by atom transfer radical polymerization, was hydrolyzed with hydrochloric acid for obtaining PS-b-PAA. The obtained PS-b-PAA was then compounded with the modified gamma-Fe2O3, and subsequently the magnetic nanocomposite was achieved. The products were characterized by H-1 NMR, FTIR, gel permeation chromatography, thermogravimetric analysis, transmission electron microscopy and vibrating sample magnetometer. The results showed that the nanocomposites exhibited soft magnetism, with the mean diameter of 100 nm approximately. (C) 2011 Elsevier B.V. All rights reserved.
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