Effect of antioxidants and fire retardants as mineral fillers on the physical and mechanical properties of high loading hybrid biocomposites reinforced with rice husks and sawdust

Mohd Rashid Yusof Hamid, Mohd Hafizuddin Ab Ghani, Sahrim Ahmad

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

In this study, the physical and mechanical properties of recycled high density polyethylene (rHDPE) reinforced with a high loading hybrid of rice husks and sawdust were evaluated, and the effect of antioxidants (AOs) and fire retardants (FRs) as additives were investigated. The rHDPE and natural fibres were compounded into pellets by a compounder, then the pellets were extruded using a counter-rotating twin-screw extruder and test specimens were prepared using the hot and cold press process. Maleic anhydride was used as a coupling agent to increase the adhesion of the fibre/matrix interface. The thermal behaviour of biocomposites was evaluated using a thermal gravimetric analyser (TGA). The mechanical behaviour was measured using tensile, flexural and impact testing in comparison with non-added AOs and FRs. From the study, samples with 0.5. wt.% of antioxidants and 20. wt.% of fire retardants produce the most reasonable strength and elasticity of composites. Furthermore, the effect of the presence of antioxidants and fire retardants on water uptake was minimal. Microstructure analysis of the fractured surfaces of biocomposites confirmed improved interfacial bonding.

Original languageEnglish
Pages (from-to)96-102
Number of pages7
JournalIndustrial Crops and Products
Volume40
Issue number1
DOIs
Publication statusPublished - Nov 2012

Fingerprint

biocomposites
filling materials
flame retardants
rice hulls
sawdust
mechanical properties
physical properties
minerals
antioxidants
polyethylene
pellets
heat
natural fibers
extruders
composite materials
elasticity (mechanics)
screws
water uptake
microstructure
adhesion

Keywords

  • Antioxidants
  • Fire retardants
  • High loading biocomposites
  • Hybrid
  • Natural fibres
  • Rice husks

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

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title = "Effect of antioxidants and fire retardants as mineral fillers on the physical and mechanical properties of high loading hybrid biocomposites reinforced with rice husks and sawdust",
abstract = "In this study, the physical and mechanical properties of recycled high density polyethylene (rHDPE) reinforced with a high loading hybrid of rice husks and sawdust were evaluated, and the effect of antioxidants (AOs) and fire retardants (FRs) as additives were investigated. The rHDPE and natural fibres were compounded into pellets by a compounder, then the pellets were extruded using a counter-rotating twin-screw extruder and test specimens were prepared using the hot and cold press process. Maleic anhydride was used as a coupling agent to increase the adhesion of the fibre/matrix interface. The thermal behaviour of biocomposites was evaluated using a thermal gravimetric analyser (TGA). The mechanical behaviour was measured using tensile, flexural and impact testing in comparison with non-added AOs and FRs. From the study, samples with 0.5. wt.{\%} of antioxidants and 20. wt.{\%} of fire retardants produce the most reasonable strength and elasticity of composites. Furthermore, the effect of the presence of antioxidants and fire retardants on water uptake was minimal. Microstructure analysis of the fractured surfaces of biocomposites confirmed improved interfacial bonding.",
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author = "Hamid, {Mohd Rashid Yusof} and {Ab Ghani}, {Mohd Hafizuddin} and Sahrim Ahmad",
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AU - Ahmad, Sahrim

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AB - In this study, the physical and mechanical properties of recycled high density polyethylene (rHDPE) reinforced with a high loading hybrid of rice husks and sawdust were evaluated, and the effect of antioxidants (AOs) and fire retardants (FRs) as additives were investigated. The rHDPE and natural fibres were compounded into pellets by a compounder, then the pellets were extruded using a counter-rotating twin-screw extruder and test specimens were prepared using the hot and cold press process. Maleic anhydride was used as a coupling agent to increase the adhesion of the fibre/matrix interface. The thermal behaviour of biocomposites was evaluated using a thermal gravimetric analyser (TGA). The mechanical behaviour was measured using tensile, flexural and impact testing in comparison with non-added AOs and FRs. From the study, samples with 0.5. wt.% of antioxidants and 20. wt.% of fire retardants produce the most reasonable strength and elasticity of composites. Furthermore, the effect of the presence of antioxidants and fire retardants on water uptake was minimal. Microstructure analysis of the fractured surfaces of biocomposites confirmed improved interfacial bonding.

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