Effect of lithium chloride on cellulose/1-allyl-3-methylimidazolium chloride solutions
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- 作者：Jun Song ; Haitao Cao ; Fang Liu ; Bowen Cheng ; Xiaolin Fang ; Guangfen Li…
- 刊名：Rheologica Acta
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：55
- 期：5
- 页码：423-430
- 全文大小：1,166 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Characterization and Evaluation Materials
Polymer Sciences
Mechanical Engineering
Soft Matter and Complex Fluids
Food Science - 出版者：Springer Berlin / Heidelberg
- ISSN：1435-1528
- 卷排序：55
文摘
In this paper, the effects of lithium chloride (LiCl) on 1-allyl-3-methylimidazolium chloride (AMIMCl) and cellulose/AMIMCl were studied by steady-state and dynamic rheology experiments. After adding LiCl, a suprastructure may be formed in AMIMCl/LiCl because of fiber drawing and shear-thinning behavior. Moreover, the size of cellulose coil swelled by adding LiCl. In the master curve of cellulose-AMIMCl/LiCl solution, the critical overlap concentration was c* = 0.63 and the entangled concentration was ce = 2.27 for the entangled regime. Dependence of ηspon cellulose concentration in cellulose-AMIMCl/LiCl was ηsp∼c1.58and c2.91in dilute and semi-dilute untangled regimes, respectively. Therefore, the AMIMCl/LiCl mixture was not a θ solvent for the neutral polymer. The solubility of cellulose decreased and degradation was aggravated after adding LiCl.KeywordsBiopolymerPolymer solutionViscosityRheologyDegradation