Magnetic Cobalt and Cobalt Oxide Nanoparticles in Hyperbranched Polyester Polyol Matrix

  • Medvedeva O
  • Kambulova S
  • Bondar O
  • et al.
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Abstract

A series of cobalt (Co) and its oxides based nanoparticles were synthesized by using hyperbranched polyester polyol Boltorn H20 as a platform and sodium borohydride as a reducing agent. UV, FT-IR, XRD, NTA, and TEM methods were employed to obtain physicochemical characteristics of the products. The average diameter of Co nanoparticles was approximately 8.2±3.4 nm. Their magnetic properties, including hysteresis loop, field-cooled, and zero field-cooled curves were investigated. The nanoparticles exhibit superparamagnetism at room temperature, accompanied by magnetic hysteresis below the blocking temperature.

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Medvedeva, O. I., Kambulova, S. S., Bondar, O. V., Gataulina, A. R., Ulakhovich, N. A., Gerasimov, A. V., … Kutyreva, M. P. (2017). Magnetic Cobalt and Cobalt Oxide Nanoparticles in Hyperbranched Polyester Polyol Matrix. Journal of Nanotechnology, 2017, 1–9. https://doi.org/10.1155/2017/7607658

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