Application of Twin Screw Extruder in Cellulose Dissolution with Ionic Liquid

Abstract:

Twin-screw extruder was used as a dissolution unit for microcrystalline cellulose with ionic liquid. Ionic liquid (1-butyl-3-methylimidazolium chloride) was applied as solvent and plasticizer; it was mixed with cellulose to prepare the extrusion mixture. The extrusion mixture was feed into twin screw extruder which was run under conditions; speed 65 rpm and 1400C. In order to determine whether the cellulose I has been transformed into cellulose II, the solubility, structure, crystallinty and thermal stability of the extrude cellulose were investigated by polarizing Optical microscope, FTIR, XRD and TGA, respectively. The results which were obtained from polarizing optical microscope showed a clear cellulose solution without undissolved cellulose. FTIR confirmed the transfer cellulose I into cellulose II. XRD result showed a decrease in degree of crystallinity and confirmed the change of cellulose I into cellulose II. Finally, TGA analysis approved that the thermal stability was decreased according to the decrease in crystallinity.

• Periodical: Applied Mechanics and Materials (Volumes 268-270)
• Pages: 605-609
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.268-270.605
• Online since: December 2012
• Authors: Magdi E. Gibril, Hai Feng Li, Xin Da Li, Huan Li, Xuan Zhong, Yue Zhang, Ke Qing Han, Mu Huo Yu
• Keywords: Cellulose, Dissolution, Ionic Liquid (IL), Twin Screw Extruder

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