Properties enhancement in multiwalled carbon nanotube-magnetite hybrid-filled polypropylene natural rubber nanocomposites through functionalization and processing methods

Ing Kong, Sahrim Ahmad, Robert Shanks

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The effect of multiwalled carbon nanotubes (MWCNTs)-magnetite (Fe3O4) hybrid content on the thermal, dynamic mechanical, and morphological properties of thermoplastic natural rubber (TPNR) nanocomposites was evaluated. TPNR/filler nanocomposites were prepared using a melt-blending method with a ball-milling technique as a premixed process. The acid treatment successfully shortened the lengths and disentangled the crowds of MWCNTs, which led to a better dispersion of MWCNTs in the polymer matrix, as revealed by optical microscopy and scanning electron microscopy. The improved dispersion of acid-treated MWCNTs-Fe3O4 in the TPNR matrix and the enhanced interfacial adhesion between acid-treated MWCNTs-Fe3O4 and the TPNR matrix increased the thermal stability and dynamic mechanical properties. Acid-treated MWCNTs acted as radical scavengers, which helped delay the onset of thermal degradation and hence improved the thermal stability. As expected, MWCNTs played a role as the nucleating agent in the TPNR matrix; however, the effect was more pronounced for the TPNR matrix containing pristine MWCNTs.

Original languageEnglish
Pages (from-to)257-267
Number of pages11
JournalScience and Engineering of Composite Materials
Volume23
Issue number3
DOIs
Publication statusPublished - 1 May 2016

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Ferrosoferric Oxide
Multiwalled carbon nanotubes (MWCN)
Polypropylenes
Rubber
Magnetite
Nanocomposites
Thermoplastics
Processing
Acids
Thermodynamic stability
Ball milling
Polymer matrix
Optical microscopy
Fillers
Pyrolysis
Adhesion
Scanning
Mechanical properties
Scanning electron microscopy

Keywords

  • carbon nanotubes
  • hybrid materials
  • magnetite
  • mechanical properties
  • thermal properties
  • thermoplastic natural rubber

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

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abstract = "The effect of multiwalled carbon nanotubes (MWCNTs)-magnetite (Fe3O4) hybrid content on the thermal, dynamic mechanical, and morphological properties of thermoplastic natural rubber (TPNR) nanocomposites was evaluated. TPNR/filler nanocomposites were prepared using a melt-blending method with a ball-milling technique as a premixed process. The acid treatment successfully shortened the lengths and disentangled the crowds of MWCNTs, which led to a better dispersion of MWCNTs in the polymer matrix, as revealed by optical microscopy and scanning electron microscopy. The improved dispersion of acid-treated MWCNTs-Fe3O4 in the TPNR matrix and the enhanced interfacial adhesion between acid-treated MWCNTs-Fe3O4 and the TPNR matrix increased the thermal stability and dynamic mechanical properties. Acid-treated MWCNTs acted as radical scavengers, which helped delay the onset of thermal degradation and hence improved the thermal stability. As expected, MWCNTs played a role as the nucleating agent in the TPNR matrix; however, the effect was more pronounced for the TPNR matrix containing pristine MWCNTs.",
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