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Lutidinium-Based Ionic Liquids for Efficient Dissolution of Cellulose
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.ORCID iD: 0000-0002-7102-5198
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry. Åbo Akademi University, Process Chemistry Centre, Laboratory of Industrial Chemistry and Reaction Engineering, FI-20500 Turku, Finland.
2019 (English)In: New Journal of Chemistry, ISSN 1144-0546, E-ISSN 1369-9261, Vol. 43, no 5, p. 2299-2306Article in journal (Refereed) Published
Abstract [en]

Herein, we have studied the potential of lutidinium-based ILs (1-allyl-3,5-dimethylpyridinium chloride [3,5-ADMPy]Cl and 1-allyl-3,4-dimethylpyridinium chloride [3,4-ADMPy]Cl) in the dissolution of cellulose, and their structures were confirmed by 1H and 13C NMR spectra, respectively. [3,5-ADMPy]Cl exhibited the highest capacity in cellulose dissolution. In fact, it dissolved 20 wt% of cellulose within 12 min and 26 wt% of cellulose in 35 min at 118 °C. The crystallinity and morphology of native and regenerated cellulose were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM) and CP/MAS 13C NMR spectroscopy. These techniques clearly suggest that the crystallinity of cellulose is reduced upon treatment in lutidinium-based ILs. The thermogravimetric analysis (TGA) showed that regenerated cellulose had thermal stability close to that of native cellulose.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2019. Vol. 43, no 5, p. 2299-2306
Keywords [en]
Cellulose dissolution, Ionic Liquids, X-ray diffraction, Cross polymerization/magic angle spinning C NMR, Thermogravimetric analysis, viscosity, scanning electron microscopy
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-154779DOI: 10.1039/C8NJ04698KISI: 000459581000027OAI: oai:DiVA.org:umu-154779DiVA, id: diva2:1274722
Available from: 2019-01-02 Created: 2019-01-02 Last updated: 2019-03-27Bibliographically approved

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Samikannu, RakeshShukla, Shashi KantSamikannu, AjaikumarMikkola, Jyri-Pekka

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