Effect of acid hydrolysis and thermal hydrolysis on solubility and properties of oil palm empty fruit bunch fiber cellulose hydrogel

Sinyee Gan, Sarani Zakaria, Peivun Ng, Chin Hua Chia, Ruey Shan Chen

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Cellulose hydrogel was produced from pretreated oil palm empty fruit bunch fiber (EFB) that went through acid hydrolysis and thermal hydrolysis. The pretreated EFB was dissolved in LiOH/urea aqueous solution using the rapid dissolution method and was subjected to a crosslinking process with the aid of epichlorohydrin to form hydrogel. The effects of both hydrolyses' time on average molecular weight (Mη), solubility, and properties of EFB hydrogels were evaluated. Both hydrolyses led to lower Mη, lower crystallinity index (CrI) and hence, resulted in higher cellulose solubility. X-ray diffraction (XRD) characterization revealed the CrI and transition of crystalline structure of EFB from cellulose I to II. The effects of hydrolysis time on the transparency, degree of swelling (DS), and morphology of the regenerated cellulose hydrogel were also investigated using an ultraviolet-visible (UV-Vis) spectrophotometer and a Field emission scanning electron microscope (FESEM), respectively. These findings provide an efficient method to improve the solubility and properties of regenerated cellulose products.

Original languageEnglish
Pages (from-to)126-139
Number of pages14
JournalBioResources
Volume11
Issue number1
DOIs
Publication statusPublished - 2016

Fingerprint

Palm oil
Hydrogel
Fruits
Hydrogels
Cellulose
cellulose
hydrolysis
Hydrolysis
solubility
Solubility
fruit
Acids
Fibers
oil
acid
crystallinity
Epichlorohydrin
Spectrophotometers
Urea
transparency

Keywords

  • Cellulose pretreatment
  • Molecular weight
  • Rapid dissolution
  • Regenerated cellulose
  • Urea alkaline aqueous solution

ASJC Scopus subject areas

  • Waste Management and Disposal
  • Environmental Engineering
  • Bioengineering

Cite this

Effect of acid hydrolysis and thermal hydrolysis on solubility and properties of oil palm empty fruit bunch fiber cellulose hydrogel. / Gan, Sinyee; Zakaria, Sarani; Ng, Peivun; Chia, Chin Hua; Chen, Ruey Shan.

In: BioResources, Vol. 11, No. 1, 2016, p. 126-139.

Research output: Contribution to journalArticle

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AU - Chen, Ruey Shan

PY - 2016

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