Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/18906
Title: | Facile cellulose dissolution and characterization in the newly synthesized 1,3-diallyl-2-ethylimidazolium acetate ionic liquid |
Authors: | Zhang, H Xu, Y Li, Y Lu, Z Cao, S Fan, M Huang, L Chen, L |
Keywords: | 1,3-diallyl-2-ethylimidazolium acetate;Ionic liquid;Co-solvent system;Solubility of cellulose;Electrospinning |
Issue Date: | 18-Oct-2017 |
Publisher: | MDPI |
Citation: | Polymers, 2017, 9 (10), pp. 1 - 12 |
Abstract: | A facile cellulose solvent 1,3-diallyl-2-ethylimidazolium acetate ([AAeim][OAc]) with high electrical conductivity has been designed and synthesized for the first time, via a quaternization reaction and ion exchange method. The dissolution characteristics of cellulose in this solvent were studied in detail. Meanwhile, the co-solvent system was designed by adding an aprotic polar solvent dimethyl sulfoxide (DMSO) in [AAeim][OAc]. The effects of temperature and the mass ratio of DMSO to [AAeim][OAc] on the solubility of cellulose were studied. Furthermore, the effects of regeneration on the molecular structure and thermal stability of cellulose were determined by Fourier transform infrared spectroscopy (FT-IR), thermal gravity analysis (TGA) and X-ray diffraction (XRD). The findings revealed that the synthesized ionic liquid (IL) has a relatively low viscosity, high conductivity and a good dissolving capacity for bamboo dissolving pulp cellulose (Degree of Polymerization: DP = 650). The macromolecular chain of the cellulose is less damaged during the dissolution and regeneration process. Due to the increased number of “free” anions [OAc]− and cations [AAeim]+, the addition of DMSO can significantly increase the solubility of the cellulose up to 12 wt % at the mass ratio of 3:1, indicating that the synthesized IL has a potential application in the electrospinning field. |
URI: | http://bura.brunel.ac.uk/handle/2438/18906 |
DOI: | http://dx.doi.org/10.3390/polym9100526 |
ISSN: | 2073-4360 http://dx.doi.org/10.3390/polym9100526 |
Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
FullText.pdf | 3.21 MB | Adobe PDF | View/Open |
Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.