Microstructural, mechanical, and physicochemical behaviours of alkali pre-treated oil palm stalk fibres

Loo Yu Xiang, Suhaiza Hanim Hanipah, Mohd Afandi P Mohammed, Azhari Samsu Baharuddin, Mohamad Azwani Shah Mat Lazim

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The effect of alkali pre-treatment (sodium hydroxide, NaOH) on the microstructural, mechanical, and chemical composition of oil palm stalk fibres (OPSF) is reported for future bioconversion processes. The OPSF was pre-treated with various concentrations of NaOH (5, 10, 20, 30, and 40% w/v). Scanning electron microscopy analysis revealed that 5% w/v alkali concentration caused complete removal of silica bodies and waxy layers, whereas pronounced degradation of the fibres occurred at 40% w/v NaOH concentration. Mechanical test results showed that the maximum elastic modulus of untreated OPSF was 2.5 GPa and the modulus was not sensitive to alkali concentration. Permanent set (plastic strain) and viscoelastic behaviours of OPSF were observed from the loading-unloading and stress relaxation test results, respectively. Agreement was observed between the Prony series viscoelastic model and test results, which provided further evidence of the viscoelastic behaviour of OPSF.

Original languageEnglish
Pages (from-to)2783-2796
Number of pages14
JournalBioResources
Volume10
Issue number2
DOIs
Publication statusPublished - 2015

Fingerprint

Palm oil
Alkalies
Fibers
oil
Bioconversion
Sodium Hydroxide
elastic modulus
Stress relaxation
unloading
Unloading
Silicon Dioxide
hydroxide
fibre
Plastic deformation
silica
Elastic moduli
plastic
chemical composition
scanning electron microscopy
Silica

Keywords

  • Lignocellulosic composition
  • Mechanical behaviours
  • Morphology
  • Oil palm stalk fibres (OPSF)
  • Pre-treatment
  • Sodium hydroxide (NaOH)

ASJC Scopus subject areas

  • Waste Management and Disposal
  • Environmental Engineering
  • Bioengineering

Cite this

Microstructural, mechanical, and physicochemical behaviours of alkali pre-treated oil palm stalk fibres. / Xiang, Loo Yu; Hanipah, Suhaiza Hanim; Mohammed, Mohd Afandi P; Baharuddin, Azhari Samsu; Mat Lazim, Mohamad Azwani Shah.

In: BioResources, Vol. 10, No. 2, 2015, p. 2783-2796.

Research output: Contribution to journalArticle

Xiang, Loo Yu ; Hanipah, Suhaiza Hanim ; Mohammed, Mohd Afandi P ; Baharuddin, Azhari Samsu ; Mat Lazim, Mohamad Azwani Shah. / Microstructural, mechanical, and physicochemical behaviours of alkali pre-treated oil palm stalk fibres. In: BioResources. 2015 ; Vol. 10, No. 2. pp. 2783-2796.
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