Effect of hydrothermal pretreatment on solubility and formation of kenaf cellulose membrane and hydrogel

Sinyee Gan, Sarani Zakaria, Chin Hua Chia, Farah Nadia Mohammad Padzil, Peivun Ng

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The hydrothermal pretreatment on kenaf core pulp (KCP) was carried out using an autoclave heated in a oil bath at 140 °C for 0.5/1/3/5 h. The hydrothermal pretreated kenaf (HPK) was dissolved in a LiOH/urea aqueous solution and subsequently used to produce cellulose membrane and hydrogel. The effects of hydrothermal pretreatment time on solubility, viscosity, crystallinity and morphology of the cellulose membrane and hydrogel were investigated. The hydrothermal pretreatment leads to higher cellulose solubility and higher viscosity of the cellulose solution. The formation of cellulose II and crystallinity index of the cellulose membrane and hydrogel were examined by X-ray diffraction (XRD). The pore size of the cellulose membrane and hydrogel displayed an upward trend with respect to the hydrothermal pretreatment period observed under a field emission scanning electron microscope (FESEM). This finding provides an efficient procedure to improve the solubility, viscosity and properties of regenerated cellulose products.

Original languageEnglish
Pages (from-to)62-68
Number of pages7
JournalCarbohydrate Polymers
Volume115
DOIs
Publication statusPublished - 22 Jan 2015

Fingerprint

Hydrogel
Hydrogels
Cellulose
Solubility
Membranes
Viscosity
Autoclaves
Urea
Field emission
Pore size
Pulp
Oils
Electron microscopes
Scanning
X ray diffraction

Keywords

  • Alkaline aqueous solution
  • Autoclave
  • Rapid dissolution
  • Regenerated cellulose
  • Urea

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Effect of hydrothermal pretreatment on solubility and formation of kenaf cellulose membrane and hydrogel. / Gan, Sinyee; Zakaria, Sarani; Chia, Chin Hua; Padzil, Farah Nadia Mohammad; Ng, Peivun.

In: Carbohydrate Polymers, Vol. 115, 22.01.2015, p. 62-68.

Research output: Contribution to journalArticle

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AU - Ng, Peivun

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