Viscosity of Cellulose−Imidazolium-Based Ionic Liquid Solutions
作者： Romain Sescousse , Kim Anh Le , Michael E. Ries , Tatiana Budtova
DOI: 10.1021/JP1024203
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摘要: The viscosities of microcrystalline cellulose dissolved in 1-ethyl-3-methylimidazolium acetate (EMIMAc) and 1-butyl-3-methylimidazolium chloride (BMIMCl) were studied detail as a function polymer concentration temperature. goal was to compare the flow solutions, macromolecule hydrodynamic properties each solvent, activation energies viscous flow. Intrinsic determined using truncated form general Huggins equation. In both solvents intrinsic viscosity decreases with increasing temperature, indicating decrease solvent thermodynamic quality. for types solutions calculated. For cellulose−EMIMAc Arrhenius plot showed concave shape, thus Vogel−Tamman−Fulcher (VTF) approach used. We suggest an improved method data analysis determination VTF constants demonstrate that solution obeys formalism. Once dependences Arrheni...
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