Preparation of Cellulose Nanocrystals Using an Ionic Liquid |
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Authors: | Zakaria Man Nawshad Muhammad Ariyanti Sarwono Mohamad Azmi Bustam M Vignesh Kumar Sikander Rafiq |
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Institution: | (1) PETRONAS Ionic Liquid Center, Department of Chemical Engineering, Universiti Teknologi PETRONAS, Tronoh, Perak, Malaysia; |
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Abstract: | In this paper cellulose nanocrystals were prepared by treating microcrystalline cellulose with 1-butyl-3-methylimidazolium
hydrogen sulphate ionic liquid. Cellulose nanocrystals, after separation from ionic liquid, were characterized by X-ray diffraction
(XRD), Fourier transform infrared (FTIR), Field emission scanning electron microscopy (FESEM) Transmission Electron Microscope
(TEM) and Thermogravimetric analysis. XRD results showed no changes in type of cellulose after the treatment with ionic liquid,
however, high crystallinity index was observed in the ionic liquid treated sample. Cellulose nanocrystals, having length around
50–300 nm and diameter around 14–22 nm were observed in the ionic liquid treated sample under FESEM and TEM, and similar patterns
of peaks as that of microcrystalline cellulose were observed for cellulose nanocrystals in the FTIR spectra. The thermal stability
of the cellulose nanocrystals was measured low as compare to microcrystalline cellulose. |
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Keywords: | |
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