Cited by 276Advanced Cellulose Research StudiesIonic liquids properties and applicationsRheology and Fluid Dynamics Studies

Rheological Properties of Cellulose/Ionic Liquid Solutions: From Dilute to Concentrated States

Gericke, Martin, Schlufter, Kerstin, Liebert, Tim, Heinze, Thomas, Budtova, Tatiana·2009·Biomacromolecules

Abstract

Steady state shear flow of different types of cellulose (microcrystalline, spruce sulfite and bacterial) dissolved in 1-ethyl-3-methylimidazolium acetate was studied in a large range of concentrations (0-15%) and temperatures (0-100 degrees C). Newtonian flow was recorded for all experimental conditions; these viscosity values were used for detailed viscosity-concentration and viscosity-temperature analysis. The exponent in the viscosity-concentration power law was found to be around 4 for temperatures from 0 to 40 degrees C, which is comparable with cellulose dissolved in other solvents, and around 2.5-3 for 60-100 degrees C. Intrinsic viscosities of all celluloses decreased with temperature, indicating a drop in solvent thermodynamic quality with heating. The data obtained can be reduced to a master plot of viscosity versus (concentration x intrinsic viscosity) for all celluloses studied in the whole temperature range. Mark-Houwink exponents were determined: they were lower than that for cellulose dissolved in LiCl/N,N-dimethylacetamide at 30 degrees C and close to theta-value. Viscosity-inverse temperature plots showed a concave shape that is dictated by solvent temperature dependence. The values of the activation energies calculated within Arrhenius approximation are in-line with those obtained for cellulose of comparable molecular weights in other solvents.

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Crossref · 10.1021/bm801430x

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  • The ordering of regenerated cellulose is reduced compared to the initial state and it is transformed into cellulose II.

    “The ordering of the regenerated cellulose is reduced compared to the initial state and it is transformed into cellulose II.75,76”

    From Deconstruction of lignocellulosic biomass with ionic liquids (2013) · cites this paper as [75]

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Authors
Gericke, M., Schlufter, K., Liebert, T., Heinze, T., & Budtova, T.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
Budtova, Tatiana
Venue
Biomacromolecules
Published
2009-04-01
Volume
10
Issue
5
Pages
1188-1194
ISSN
  • 1525-7797 (ISSN-L)
  • 1526-4602
OpenAlex
W2084548320
Cited by
276
References
36
Citations by year
2026: 5 · 2025: 11 · 2024: 9 · 2023: 18 · 2022: 9 · 2021: 20 · 2020: 16 · 2019: 24 · 2018: 13 · 2017: 16 · 2016: 12 · 2015: 18 · 2014: 22 · 2013: 18 · 2012: 23
FWCI
9.51
Type
journal article
Language
en
Open access
closed
Locations
  • Biomacromolecules (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Advanced Cellulose Research Studies
  • Physical Sciences › Chemical Engineering › Catalysis › Ionic liquids properties and applications
  • Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Rheology and Fluid Dynamics Studies
Keywords
cellulose solutions, ionic liquids, 1-ethyl-3-methylimidazolium acetate, rheology, viscosity, Mark-Houwink exponent, intrinsic viscosity, activation energy, temperature dependence, microcrystalline cellulose, bacterial cellulose, concentrated solutions, Newtonian flow
MeSH terms
Cellulose, Imidazoles, Rheology, Solutions, Temperature, Viscosity, Reproducibility of Results, Molecular Structure, Ionic Liquids

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