Journal of Magnetics

  • 제20권3호
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  • Pages.215-220
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  • 2015
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  • 1226-1750(pISSN)
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  • 2233-6656(eISSN)
한국자기학회 (The Korean Magnetics Society)
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Thermo-sensitive Electrospun Fibrous Magnetic Composite Sheets

  • Choi, Jungsu (Department of Materials Engineering, University of British Columbia) ;
  • Kim, Jinu (Department of Physics, Yeungnam University) ;
  • Yang, Heejae (Department of Materials Engineering, University of British Columbia) ;
  • Ko, Frank K. (Department of Materials Engineering, University of British Columbia) ;
  • Kim, Ki Hyeon (Department of Physics, Yeungnam University)
  • 투고 : 2015.08.11
  • 심사 : 2015.08.29
  • 발행 : 2015.09.30
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초록

The PVDF fibrous composite filled with iron oxide nanoparticles were prepared by using the electrospinning technique. The electrospun composite have the thickness in the range of $60-80{\mu}m$ with the average fibrous diameters of 500-900 nm. The magnetizations of PVDF fibrous composite filled with iron oxide nanoparticles showed 4.5 emu/g, 3.1 emu/g and 1.6 emu/g at 1.5 T of external magnetic field for 20 wt.%, 10 wt.% and 5 wt.% iron oxide nanoparticles, respectively. The heat elevation of the magnetic composite were measured under various AC magnetic fields, frequency and the ambient temperatures. The temperature reached up to $46.3^{\circ}C$ from $36^{\circ}C$ at 128 Oe and 355 kHz for 20 wt.% iron oxide nanoparticles filled in PVDF fibrous composite sheet. The specific absorption rate of theses sheets increased from 0.041 W/g to 0.236 W/g with the increment of AC magnetic field from 90 Oe to 167 Oe at 190 kHz, respectively.

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