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| Preparation and Rheological Properties of Cellulose Solutions from Different Solvents |
| Received:March 13, 2019 |
| DOI：10.11981/j.issn.1000-6842.2020.01.01 |
| Key Words: |
| Fund Project:国家自然科学基金面上项目（31971612）；福建省自然科学基金青年创新（2019J05044）；福建省自然科学基金（2016J01208）；福建农林大学科技创新基金（KFA18007A和KFA18003A）。 |
| Author Name | Affiliation | Postcode | | CHENG | College of Material Engineering, Fujian Agriculture and Forestry University,Fuzhou,Fujian Province,350108 | 350108 | | WANG Yutong | College of Material Engineering, Fujian Agriculture and Forestry University,Fuzhou,Fujian Province,350108 | 350108 | | YUAN Dong | College of Material Engineering, Fujian Agriculture and Forestry University,Fuzhou,Fujian Province,350108 | 350108 | | CAO Hongmei | College of Material Engineering, Fujian Agriculture and Forestry University,Fuzhou,Fujian Province,350108 | 350108 | | CHEN Shilin | College of Material Engineering, Fujian Agriculture and Forestry University,Fuzhou,Fujian Province,350108 | 350108 | | HUANG Lihui | College of Material Engineering, Fujian Agriculture and Forestry University,Fuzhou,Fujian Province,350108 | 350108 | | LIN Liulian | College of Material Engineering, Fujian Agriculture and Forestry University,Fuzhou,Fujian Province,350108 | 350108 |
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| Abstract: |
| Six different solvent systems including N-methylmorpholine-N-oxide (NMMO), 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) ionic liquid (ILS), dimethylacetamide/lithium chloride (DMAc/LiCl), NaOH/urea, traditional copper(II)-ethylenediamine complex (CED) and CS2/NaOH were employed respectively to dissolve cellulose and different uniform cellulose solutions were obtained. Steady state and dynamic rheological properties of different cellulose solutions were investigated under the same condition. The results showed that all cellulose solutions were pseudoplastic fluids and the apparent viscosity decreased with the increasing of shear rate. The cellulose solutions prepared by CED and CS2/NaOH had the relatively good processing performance, however the destructive effect on cellulose macromolecules was relatively strong. The cellulose solutions obtained through NMMO and ILS dissolution had relatively inferior processing performance with relatively weak destructive effect on cellulose macromolecules. The processing properties of the cellulose solution and the destructive effect on cellulose macromolecules obtained from DMAc/LiCl and NaOH/Urea solvents were between the traditional solvent systems(CED and CS2/NaOH) and new type of solvent systems (NMMO and ILS). |
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