Magnetic and microwave absorbing properties of magnetitethermoplastic natural rubber nanocomposites

Ing Kong, Sahrim Ahmad, Mustaffa Hj Abdullah, David Hui, Ahmad Nazlim Yusoff, Dwi Puryanti

Research output: Contribution to journalArticle

147 Citations (Scopus)

Abstract

Magnetic and microwave absorbing properties of thermoplastic natural rubber (TPNR) filled magnetite (Fe3O4) nanocomposites were investigated. The TPNR matrix was prepared from polypropylene (PP), natural rubber (NR) and liquid natural rubber (LNR) in the ratio of 70:20:10 with the LNR as the compatibilizer. TPNR-Fe3O4 nanocomposites with 412 wt% Fe3O4 as filler were prepared via a Thermo Haake internal mixer using a melt-blending method. XRD reveals the presence of cubic spinel structure of Fe3O4 with the lattice parameter of a=8.395 . TEM micrograph shows that the Fe3O4 nanoparticles are almost spherical with the size ranging 2050 nm. The values of saturation magnetization (MS), remanence (MR), initial magnetic susceptibility (χi) and initial permeability (μi) increase, while the coercivity (HC) decreases with increasing filler content for all compositions. For nanocomposites, the values of the real (εr′) and imaginary permittivity (εr′′) and imaginary permeability (μr′′) increase, while the value of real permeability (μr′) decreases as the filler content increases. The absorption or minimum reflection loss (RL) continuously increases and the dip shifts to a lower frequency region with the increasing of both filler content in nanocomposites and the sample thickness. The RL is -25.51 dB at 12.65 GHz and the absorbing bandwidth in which the RL is less than -10 dB is 2.7 GHz when the filler content is 12 wt% at 9 mm sample thickness.

Original languageEnglish
Pages (from-to)3401-3409
Number of pages9
JournalJournal of Magnetism and Magnetic Materials
Volume322
Issue number21
DOIs
Publication statusPublished - Nov 2010

Fingerprint

Rubber
rubber
Nanocomposites
nanocomposites
fillers
Microwaves
Fillers
microwaves
Thermoplastics
permeability
Ferrosoferric Oxide
Compatibilizers
Remanence
Polypropylenes
Liquids
Magnetite
Saturation magnetization
remanence
liquids
Coercive force

Keywords

  • Magnetic property
  • Magnetite
  • Microstructure
  • Microwave absorbing property
  • Thermoplastic natural rubber

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Magnetic and microwave absorbing properties of magnetitethermoplastic natural rubber nanocomposites. / Kong, Ing; Ahmad, Sahrim; Hj Abdullah, Mustaffa; Hui, David; Yusoff, Ahmad Nazlim; Puryanti, Dwi.

In: Journal of Magnetism and Magnetic Materials, Vol. 322, No. 21, 11.2010, p. 3401-3409.

Research output: Contribution to journalArticle

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