Cellulose dissolution and regeneration using a non-aqueous, non-stoichiometric protic ionic liquid system.
In: Cellulose, Jg. 27 (2020-10-15), Heft 16, S. 9593-9603
Online
academicJournal
Zugriff:
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. [ABSTRACT FROM AUTHOR]
Copyright of Cellulose is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Titel: |
Cellulose dissolution and regeneration using a non-aqueous, non-stoichiometric protic ionic liquid system.
|
---|---|
Autor/in / Beteiligte Person: | Berga, Laura ; Bruce, Isobel ; Nicol, Thomas W. J. ; Holding, Ashley J. ; Isobe, Noriyuki ; Shimizu, Seishi ; Walker, Adam J. ; Reid, Joshua E. S. J. |
Link: | |
Zeitschrift: | Cellulose, Jg. 27 (2020-10-15), Heft 16, S. 9593-9603 |
Veröffentlichung: | 2020 |
Medientyp: | academicJournal |
ISSN: | 0969-0239 (print) |
DOI: | 10.1007/s10570-020-03444-8 |
Schlagwort: |
|
Sonstiges: |
|