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| Preparation of Cellulose Membrane in Non-derivative Solvents and Its Properties |
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| DOI： |
| Key Words:ionic liquid; deep eutectic solvent; cellulose membrane; performance |
| Fund Project:石墨烯材料应用于木材改性及特种纸技术研究（2016HXKFCLXY0015） |
| Author Name | Affiliation | | WANG Sijie | College of Materials Science & Technology， Beijing Forestry University， Beijing， 100083 | | LI Yi | College of Materials Science & Technology， Beijing Forestry University， Beijing， 100083 | | LI Dan | College of Materials Science & Technology， Beijing Forestry University， Beijing， 100083 | | WU Zhongxuan | College of Materials Science & Technology， Beijing Forestry University， Beijing， 100083 | | PU Junwen* | College of Materials Science & Technology， Beijing Forestry University， Beijing， 100083 |
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| Abstract: |
| Regenerated cellulose membranes were prepared in the presence of four types of solvent systems， namely NaOH/urea/thiourea， ［Amim］Cl， ［Amim］Cl/DMF and choline chloride/urea. Regenerated celluloses and regenerated cellulose membranes were analyzed by Fourier transform infrared spectroscopy （FT-IR）， X-ray diffraction （XRD）， thermogravimetry analysis （TGA）， scanning electron microscope （SEM） and a universal tensile tester. It was found that the crystalline structure of regenerated celluloses transformed from cellulose I to cellulose II. Furthermore， the crystallinity， thermal stability and mechanical strength decreased. Considering the optimum properties of regenerated cellulose membranes and economic cost， the ［Amim］Cl/DMF was the optimal solvent system for preparing the regenerated cellulose membranes． |
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