Effect of ions in ionic liquids on the characteristics of cellulose from coconut husk fibres

Reh, Nur Asilah; Zakaria, Ridzuan; Zein, S. H.S.

Abstract

This paper reports the properties of cellulose nanowhiskers as new potential biomaterials. Cellulose nanowhiskers were produced from coconut husk fibres using four different anions of ionic liquids: 1-butyl-3-mehtylimidzalium chloride, 1-butyl-3-mehtylimidzalium acetate, 1-butyl-3-mehtylimidzalium bromide and 1-butyl-3-mehtylimidzalium hexafluorophosphate. The coconut husk fibre was chemically pretreated before cellulose dissolution. Morphology of the fibres under scanning electron microscopy showed that chemical treatment reduced much of surface materials on the fibres strand. Fourier transform infrared spectroscopy analysis determined that the reduced material was mainly lignin and the collected gel from the dissolution process is cellulose. Using Zetasizer Nano ZS the smallest cellulose obtained was 2.715 nm in diameter which was produced using 1-butyl-3-methylimidazolium acetate. While high-resolution transmission electron microscopy determined the cellulose produced was in rod form. The best condition for cellulose dissolution for cellulose was obtained using 1-butyl-3-methylimidazolium acetate IL at 60°C stirred for 90 minutes with 0.0126 mass ratio of fibres to IL.

Citation

Reh, N. A., Zakaria, R., & Zein, S. H. (2016). Effect of ions in ionic liquids on the characteristics of cellulose from coconut husk fibres. International journal of biomedical engineering and technology, 21(1), 80-94. https://doi.org/10.1504/IJBET.2016.076734

• Journal Article Type: Article
• Acceptance Date: Aug 23, 2015
• Online Publication Date: May 24, 2016
• Publication Date: Jan 1, 2016
• Deposit Date: Jul 6, 2020
• Journal: International Journal of Biomedical Engineering and Technology
• Print ISSN: 1752-6418
• Electronic ISSN: 1752-6426
• Publisher: Inderscience
• Peer Reviewed: Peer Reviewed
• Volume: 21
• Issue: 1
• Pages: 80-94
• DOI: https://doi.org/10.1504/IJBET.2016.076734
• Keywords: Biomaterials; Ionic liquids; Ions; Coconut husk fibres; Cellulose characteristics; Cellulose nanowhiskers; Nanotechnology
• Public URL: https://hull-repository.worktribe.com/output/549795
• Publisher URL: http://www.inderscience.com/offer.php?id=76734