Effect of nickel-cobalt-zinc ferrite filler on magnetic and thermal properties of thermoplastic natural rubber composites

Dwi Puryanti, Sahrim Ahmad, Mustaffa Hj Abdullah, Ahmad Nazlim Yusoff

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11 Citations (Scopus)

Abstract

A sample of Ni0.25Co0.25Zn0.5Fe2O4 ferrite was prepared by a double-staged sintering method in air. Thermoplastic natural rubber (TPNR) was prepared by melt blending of natural rubber (NR), liquid natural rubber (LNR), and high density polyethylene (HDPE) in an internal mixer Brabender Plasticorder PL 2000. Magnetic polymer composites were prepared from the ferrite and TPNR matrix using the same melt blending method at 135°C with mixing rate of 50 r.p.m. for 12 min. The fillers were varied from 5 to 30 weight percent. A uniform dispersion of the filler in the matrix was confirmed by thermogravimetric analysis (TGA). The density of the composites was determined using densitometer MD 200S. Magnetic properties were studied using a vibrating sample magnetometer (VSM) at room temperature (25°C). The results show that magnetization (M), saturation magnetization (MS), remanent magnetization (MR), initial susceptibility (χi) and initial permeability (μi) increase with increasing filler content at all compositions. The composites can be classified as soft magnetic materials as their coercivities are in the range of 30-36 Oe. The differential scanning calorimetric (DSC) results indicate that the glass transition temperature (Tg) and the melting point (Tm) of all the composites are independent of the filler content. The thermal conductivity of the composites was found to be in the range of 0.26 to 0.52 W m<sup>-1</sup> K<sup>-1.

Original languageEnglish
Pages (from-to)327-338
Number of pages12
JournalInternational Journal of Polymeric Materials and Polymeric Biomaterials
Volume56
Issue number3
DOIs
Publication statusPublished - 1 Mar 2007

Fingerprint

Rubber
Cobalt
Nickel
Thermoplastics
Ferrite
Fillers
Zinc
Magnetic properties
Thermodynamic properties
Composite materials
Magnetization
Densitometers
Soft magnetic materials
Polyethylene
Magnetometers
Saturation magnetization
High density polyethylenes
Coercive force
Melting point
Thermogravimetric analysis

Keywords

  • Coersive force
  • Hysteresis
  • Magnetic polymer
  • Magnetic properties
  • Magnetization curve

ASJC Scopus subject areas

  • Polymers and Plastics
  • Chemical Engineering (miscellaneous)

Cite this

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title = "Effect of nickel-cobalt-zinc ferrite filler on magnetic and thermal properties of thermoplastic natural rubber composites",
abstract = "A sample of Ni0.25Co0.25Zn0.5Fe2O4 ferrite was prepared by a double-staged sintering method in air. Thermoplastic natural rubber (TPNR) was prepared by melt blending of natural rubber (NR), liquid natural rubber (LNR), and high density polyethylene (HDPE) in an internal mixer Brabender Plasticorder PL 2000. Magnetic polymer composites were prepared from the ferrite and TPNR matrix using the same melt blending method at 135°C with mixing rate of 50 r.p.m. for 12 min. The fillers were varied from 5 to 30 weight percent. A uniform dispersion of the filler in the matrix was confirmed by thermogravimetric analysis (TGA). The density of the composites was determined using densitometer MD 200S. Magnetic properties were studied using a vibrating sample magnetometer (VSM) at room temperature (25°C). The results show that magnetization (M), saturation magnetization (MS), remanent magnetization (MR), initial susceptibility (χi) and initial permeability (μi) increase with increasing filler content at all compositions. The composites can be classified as soft magnetic materials as their coercivities are in the range of 30-36 Oe. The differential scanning calorimetric (DSC) results indicate that the glass transition temperature (Tg) and the melting point (Tm) of all the composites are independent of the filler content. The thermal conductivity of the composites was found to be in the range of 0.26 to 0.52 W m-1 K-1.",
keywords = "Coersive force, Hysteresis, Magnetic polymer, Magnetic properties, Magnetization curve",
author = "Dwi Puryanti and Sahrim Ahmad and Abdullah, {Mustaffa Hj} and Yusoff, {Ahmad Nazlim}",
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AU - Puryanti, Dwi

AU - Ahmad, Sahrim

AU - Abdullah, Mustaffa Hj

AU - Yusoff, Ahmad Nazlim

PY - 2007/3/1

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N2 - A sample of Ni0.25Co0.25Zn0.5Fe2O4 ferrite was prepared by a double-staged sintering method in air. Thermoplastic natural rubber (TPNR) was prepared by melt blending of natural rubber (NR), liquid natural rubber (LNR), and high density polyethylene (HDPE) in an internal mixer Brabender Plasticorder PL 2000. Magnetic polymer composites were prepared from the ferrite and TPNR matrix using the same melt blending method at 135°C with mixing rate of 50 r.p.m. for 12 min. The fillers were varied from 5 to 30 weight percent. A uniform dispersion of the filler in the matrix was confirmed by thermogravimetric analysis (TGA). The density of the composites was determined using densitometer MD 200S. Magnetic properties were studied using a vibrating sample magnetometer (VSM) at room temperature (25°C). The results show that magnetization (M), saturation magnetization (MS), remanent magnetization (MR), initial susceptibility (χi) and initial permeability (μi) increase with increasing filler content at all compositions. The composites can be classified as soft magnetic materials as their coercivities are in the range of 30-36 Oe. The differential scanning calorimetric (DSC) results indicate that the glass transition temperature (Tg) and the melting point (Tm) of all the composites are independent of the filler content. The thermal conductivity of the composites was found to be in the range of 0.26 to 0.52 W m-1 K-1.

AB - A sample of Ni0.25Co0.25Zn0.5Fe2O4 ferrite was prepared by a double-staged sintering method in air. Thermoplastic natural rubber (TPNR) was prepared by melt blending of natural rubber (NR), liquid natural rubber (LNR), and high density polyethylene (HDPE) in an internal mixer Brabender Plasticorder PL 2000. Magnetic polymer composites were prepared from the ferrite and TPNR matrix using the same melt blending method at 135°C with mixing rate of 50 r.p.m. for 12 min. The fillers were varied from 5 to 30 weight percent. A uniform dispersion of the filler in the matrix was confirmed by thermogravimetric analysis (TGA). The density of the composites was determined using densitometer MD 200S. Magnetic properties were studied using a vibrating sample magnetometer (VSM) at room temperature (25°C). The results show that magnetization (M), saturation magnetization (MS), remanent magnetization (MR), initial susceptibility (χi) and initial permeability (μi) increase with increasing filler content at all compositions. The composites can be classified as soft magnetic materials as their coercivities are in the range of 30-36 Oe. The differential scanning calorimetric (DSC) results indicate that the glass transition temperature (Tg) and the melting point (Tm) of all the composites are independent of the filler content. The thermal conductivity of the composites was found to be in the range of 0.26 to 0.52 W m-1 K-1.

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