Berga, Laura, Bruce, Isobel, Nicol, Thomas et al. (5 more authors) (2020) Cellulose dissolution and regeneration using a non-aqueous, non-stoichiometric protic ionic liquid system. Cellulose. 9593–9603. ISSN 1572-882X
Abstract
The solubility of cellulose has been studied as a function of composition in the binary mixture of 1,1,3,3-tetramethylguanidine and propionic acid. In amine-rich compositions, greater quantities of cellulose can be dissolved than in the equimolar composition, a.k.a. the protic ionic liquid [TMGH][OPr]. By applying a methodology of a short period of heating followed by cooling, similar concentrations of cellulose can be achieved in a much shorter time period. Finally, regeneration of cellulose from solution can be achieved by altering the acid:amine molar ratio. In comparison to cellulose regenerated from these solutions using water as an antisolvent, cellulose regenerated with propionic acid exhibit a lower crystallinity as inferred from x-ray diffractometry, but a greater average molecular weight as inferred from gel permeation chromatography.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©The Author(s) 2020. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 04 Aug 2020 15:00 |
Last Modified: | 08 Feb 2025 00:35 |
Published Version: | https://doi.org/10.1007/s10570-020-03444-8 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1007/s10570-020-03444-8 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:163964 |
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