Effects of alkali treatment on mechanical properties of epoxy composites reinforced kenaf fibre using compression moulding process

Research output: Contribution to journalArticle

Abstract

Development of sustainable and renewable materials from natural resources, especially plant fibre, has drawn considerable attention instead of synthetic fibre due to environmental concerns. Thermoset reinforced natural filler composites still challenges in term of dispersion, distribution and interfacial bonding with polymer matrix. The aim of this study is to fabricate epoxy composite reinforced with kenaf fibre using a compression moulding technique. The composites were fabricated with different fibre loadings and various types of kenaf fibres (untreated and treated kenaf). The kenaf fibres were treatedwith a NaOH solution (6 wt%) at room temperature for 24 hours in order to remove the impurities from the surface. The effect of the alkali treatment on the properties of epoxy composite was investigated. Thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy were deployed to study the thermal behaviour of untreated and treated kenaf/epoxy composites. Results of the TGA show that the untreated kenaf starts to decompose earlier compared to the treated kenaf. Reinforcement of untreated and treated kenaf in composites produces robust properties in terms of strength and microstructure. The addition of kenaf increases flexural properties by 25.95% compared to pure epoxy composite. Flexural strength shows a higher result at 50 wt% of fibre loading with an increment of 98.92% (untreated kenaf) and 135.14% (treated kenaf). Regarding the tensile strength, the reinforcement of 40 wt% of untreated kenaf shows higher tensile properties (49.29 MPa) with an increment of 25%.

Original languageEnglish
Pages (from-to)86-95
Number of pages10
JournalInternational Journal of Mechanical and Mechatronics Engineering
Volume18
Issue number3
Publication statusPublished - 1 Jun 2018

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Kenaf fibers
Compression molding
Mechanical properties
Composite materials
Thermogravimetric analysis
Fibers
Reinforcement
Synthetic fibers
Thermosets
Natural resources
Polymer matrix
Tensile properties
Bending strength
Fourier transform infrared spectroscopy
Fillers
Tensile strength
Impurities
Microstructure

Keywords

  • Alkali treatment
  • Compression moulding
  • Mechanical properties
  • Polymer-matrix composites (PMC)

ASJC Scopus subject areas

  • Engineering(all)

Cite this

@article{b9558b65269a4212a15761e247032f85,
title = "Effects of alkali treatment on mechanical properties of epoxy composites reinforced kenaf fibre using compression moulding process",
abstract = "Development of sustainable and renewable materials from natural resources, especially plant fibre, has drawn considerable attention instead of synthetic fibre due to environmental concerns. Thermoset reinforced natural filler composites still challenges in term of dispersion, distribution and interfacial bonding with polymer matrix. The aim of this study is to fabricate epoxy composite reinforced with kenaf fibre using a compression moulding technique. The composites were fabricated with different fibre loadings and various types of kenaf fibres (untreated and treated kenaf). The kenaf fibres were treatedwith a NaOH solution (6 wt{\%}) at room temperature for 24 hours in order to remove the impurities from the surface. The effect of the alkali treatment on the properties of epoxy composite was investigated. Thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy were deployed to study the thermal behaviour of untreated and treated kenaf/epoxy composites. Results of the TGA show that the untreated kenaf starts to decompose earlier compared to the treated kenaf. Reinforcement of untreated and treated kenaf in composites produces robust properties in terms of strength and microstructure. The addition of kenaf increases flexural properties by 25.95{\%} compared to pure epoxy composite. Flexural strength shows a higher result at 50 wt{\%} of fibre loading with an increment of 98.92{\%} (untreated kenaf) and 135.14{\%} (treated kenaf). Regarding the tensile strength, the reinforcement of 40 wt{\%} of untreated kenaf shows higher tensile properties (49.29 MPa) with an increment of 25{\%}.",
keywords = "Alkali treatment, Compression moulding, Mechanical properties, Polymer-matrix composites (PMC)",
author = "Ismail, {N. F.} and Norhamidi Muhamad and Sulong, {Abu Bakar} and {Che Haron}, {Che Hassan}",
year = "2018",
month = "6",
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language = "English",
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pages = "86--95",
journal = "International Journal of Mechanical and Mechatronics Engineering",
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T1 - Effects of alkali treatment on mechanical properties of epoxy composites reinforced kenaf fibre using compression moulding process

AU - Ismail, N. F.

AU - Muhamad, Norhamidi

AU - Sulong, Abu Bakar

AU - Che Haron, Che Hassan

PY - 2018/6/1

Y1 - 2018/6/1

N2 - Development of sustainable and renewable materials from natural resources, especially plant fibre, has drawn considerable attention instead of synthetic fibre due to environmental concerns. Thermoset reinforced natural filler composites still challenges in term of dispersion, distribution and interfacial bonding with polymer matrix. The aim of this study is to fabricate epoxy composite reinforced with kenaf fibre using a compression moulding technique. The composites were fabricated with different fibre loadings and various types of kenaf fibres (untreated and treated kenaf). The kenaf fibres were treatedwith a NaOH solution (6 wt%) at room temperature for 24 hours in order to remove the impurities from the surface. The effect of the alkali treatment on the properties of epoxy composite was investigated. Thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy were deployed to study the thermal behaviour of untreated and treated kenaf/epoxy composites. Results of the TGA show that the untreated kenaf starts to decompose earlier compared to the treated kenaf. Reinforcement of untreated and treated kenaf in composites produces robust properties in terms of strength and microstructure. The addition of kenaf increases flexural properties by 25.95% compared to pure epoxy composite. Flexural strength shows a higher result at 50 wt% of fibre loading with an increment of 98.92% (untreated kenaf) and 135.14% (treated kenaf). Regarding the tensile strength, the reinforcement of 40 wt% of untreated kenaf shows higher tensile properties (49.29 MPa) with an increment of 25%.

AB - Development of sustainable and renewable materials from natural resources, especially plant fibre, has drawn considerable attention instead of synthetic fibre due to environmental concerns. Thermoset reinforced natural filler composites still challenges in term of dispersion, distribution and interfacial bonding with polymer matrix. The aim of this study is to fabricate epoxy composite reinforced with kenaf fibre using a compression moulding technique. The composites were fabricated with different fibre loadings and various types of kenaf fibres (untreated and treated kenaf). The kenaf fibres were treatedwith a NaOH solution (6 wt%) at room temperature for 24 hours in order to remove the impurities from the surface. The effect of the alkali treatment on the properties of epoxy composite was investigated. Thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy were deployed to study the thermal behaviour of untreated and treated kenaf/epoxy composites. Results of the TGA show that the untreated kenaf starts to decompose earlier compared to the treated kenaf. Reinforcement of untreated and treated kenaf in composites produces robust properties in terms of strength and microstructure. The addition of kenaf increases flexural properties by 25.95% compared to pure epoxy composite. Flexural strength shows a higher result at 50 wt% of fibre loading with an increment of 98.92% (untreated kenaf) and 135.14% (treated kenaf). Regarding the tensile strength, the reinforcement of 40 wt% of untreated kenaf shows higher tensile properties (49.29 MPa) with an increment of 25%.

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