Journal
CARBOHYDRATE POLYMERS
Volume 117, Issue -, Pages 133-139Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2014.08.113
Keywords
Deep eutectic solvent; Choline chloride; Urea; Cellulose; Plasticizer
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Funding
- Major State Basic Research Projects of China [973-2010CB732204]
- State Key Program of National Natural Science Foundation of China [21336002]
- Science and Technology Project of Guangzhou City in China
- Research Fund for the Doctoral Program of Higher Education of China [20130172120024]
- Guangdong natural Science Foundation [S2013040015055]
- Fundamental Research Funds for the Central Universities
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Recently, choline chloride/urea (ChCl/urea), a typical deep eutectic solvent (DES), has been found to possess various applications in organic synthesis, electrochemistry, and nanomaterial preparation. Herein we reported the first attempt to plasticize regenerated cellulose film (RCF) using ChCl/urea as an effective plasticizer. Meanwhile, RCFs plasticized with glycerol and sorbitol were also prepared for comparison. The plasticized RCFs were investigated by Fourier transform infrared (FT-IR) spectroscopy, wide-angle X-ray diffraction (XRD), atomic force microscopy (AFM), and mechanical testing. Transparent and soft RCFs could be successfully prepared in the presence of ChCl/urea, and high elongation at break (34.88%) suggested a significant plasticizing efficiency. No new crystal and phase separation occurred to ChCl/urea plasticized RCFs. The thermal stability of ChCl/urea plasticized RCF was lowered. These results indicated that ChCl/urea was an effective plasticizer for producing cellulose films. (C) 2014 Elsevier Ltd. All rights reserved.
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