Autohydrolysis processing as an alternative to enhance cellulose solubility and preparation of its regenerated bio-based materials

Sinyee Gan, Sarani Zakaria, Ruey Shan Chen, Chin Hua Chia, Farah Nadia Mohammad Padzil, Seyedehmaryam Moosavi

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Kenaf core pulp has been successfully autohydrolysed using an autoclave heated in oil bath at various reaction temperature at 100, 120 and 140 °C. Membranes, hydrogels and aerogels were then prepared from autohydrolysed kenaf in urea/alkaline medium by casting on the glass plate, by using epichlorohydrin (ECH) as cross-linker via stirring and freeze-drying method, respectively. The autohydrolysis process reduced the molecular weight of cellulose and enhanced cellulose solubility and viscosity. Structure and properties of the regenerated products were measured with Field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), Ultraviolet–visible (UV–Vis) spectrophotometer and swelling testing. As the autohydrolysis temperature increased, the porosity of cellulose membranes (as seen from the morphology) increased. The autohydrolysis process improved the swelling porperties and transparency of regenerated cellulose hydrogels. This finding is expected to be useful in reducing molecular weight of cellulose in order to produce regenerated bio-based cellulose materials.

Original languageEnglish
Pages (from-to)181-189
Number of pages9
JournalMaterials Chemistry and Physics
Volume192
DOIs
Publication statusPublished - 1 May 2017

Fingerprint

cellulose
Cellulose
solubility
Solubility
preparation
Processing
Hydrogels
swelling
Swelling
molecular weight
Molecular weight
Epichlorohydrin
membranes
Membranes
freeze drying
autoclaves
Aerogels
aerogels
Spectrophotometers
Autoclaves

Keywords

  • Aerogel
  • Hydrogel
  • Membrane
  • Molecular weight
  • Thermal treatment

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Autohydrolysis processing as an alternative to enhance cellulose solubility and preparation of its regenerated bio-based materials. / Gan, Sinyee; Zakaria, Sarani; Chen, Ruey Shan; Chia, Chin Hua; Padzil, Farah Nadia Mohammad; Moosavi, Seyedehmaryam.

In: Materials Chemistry and Physics, Vol. 192, 01.05.2017, p. 181-189.

Research output: Contribution to journalArticle

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