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Three methods to measure the dissolution activation energy of cellulosic fibres using time-temperature superposition
Liang, Yunhao Ries, Michael Hine, Peter
Liang, Yunhao
Ries, Michael
Hine, Peter
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2022-04-28
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Abstract
Three methods are established to explore the dissolution kinetics of cellulosic fibres in the ionic liquid 1-ethyl-3-methyl-imidazolium acetate ([C2mim][OAc]), based on optical microscopic images of processed dried cellulose and cellulose hydrogels. The dissolution process for different times at various temperatures was analysed using time-temperature superposition, and from this the dissolution was found to follow an Arrhenius behaviour. Three values for the activation energy of dissolution were obtained from three different quantifying methods; these were found to agree, giving an average value of 73 ± 2 kJ/mol. A new method is developed to determine the swelling ratio of different regions of the processed cellulose samples, along with the different water volume fractions contained therein. The findings will be of interest to researchers making all cellulose composites and those studying the dissolution of cellulose by ionic liquids.
Citation
Liang, Y., Ries, M. E., & Hine, P. J. (2022). Three methods to measure the dissolution activation energy of cellulosic fibres using time-temperature superposition. Carbohydrate Polymers, 291, 119541. https://doi.org/10.1016/j.carbpol.2022.119541
Publisher
Elsevier
Journal
Carbohydrate Polymers
Research Unit
DOI
10.1016/j.carbpol.2022.119541
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Article
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© 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)
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ISSN
0144-8617
EISSN
1879-1344