Superbase ionic liquids for effective cellulose processing from dissolution to carbonisation

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dc.contributor.authorKuzmina, Olga
dc.contributor.authorBhardwaj, Jyoti
dc.contributor.authorRizal Vincent, Sheril
dc.contributor.authorWanasekara, Nandula Dasitha
dc.contributor.authorKalossaka, Livia Mariadaria
dc.contributor.authorGriffith, Jeraime
dc.contributor.authorPotthast, Antje
dc.contributor.authorRahatekar, Sameer S.
dc.contributor.authorEichhorn, Stephen James
dc.contributor.authorWelton, Tom
dc.date.accessioned2018-02-14T09:57:39Z
dc.date.available2018-02-14T09:57:39Z
dc.date.issued2017-11-23
dc.description.abstractA range of superbase derived ionic liquids (SILs) was synthesised and characterised. Their ability to dissolve cellulose and the characteristics of the produced fibres were correlated to their specific structural and solvent properties. 17 ionic liquids (ILs) (including 9 novel) were analysed and six ILs were selected to produce fibres: 1-ethyl-3-methylimidazolium acetate [C2C1im][OAc], 1-ethyl-3-methylimidazolium diethyl phosphate [C2C1im][DEP] and the SILs 1-ethyl-1,8-diazabicyclo[5.4.0]undec-7-enium diethylphosphate [DBUEt][DEP], 1,8-diazabicyclo[5.4.0]undec-7-enium acetate [DBUH][OAc], 1,5-diazabicyclo[4.3.0]non-5-enium acetate [DBNH][OAc] and 1-ethyl-1,5-diazabicyclo[4.3.0]non-5-enium diethylphsophate [DBNEt][DEP]. The mechanical properties of these fibres were investigated. The obtained fibres were then carbonised to explore possible application as carbon fibre precursors. The fibres obtained using a mixture of 1,5-diazabicyclo[4.3.0]non-5-enium based SILs with acetate and hexanoate anions (9 : 1), [DBNH][OAc][Hex], showed a promising combination of strength, stiffness and strain at failure values for applications in textiles and fibre reinforcement in renewable composites. Using Raman spectroscopy it is demonstrated that these fibres exhibit a relatively high degree of structural order, with fewer defects than the other materials. On the other hand, analogous fibres based on imidazolium cation with acetate and hexanoate anions (9 : 1), [C2C1im][OAc][Hex] showed a decline in the quality of the produced fibres compared to the fibres produced from [C2C1im][OAc], [C2C1im][DEP] or [DBNH][OAc][Hex].en_UK
dc.identifier.citationKuzmina O, Bhardwaj J, Vincent SR, et al., Superbase ionic liquids for effective cellulose processing from dissolution to carbonisation, Green Chemistry, Volume 19, Issue 24, 2017, pp. 5949-5957en_UK
dc.identifier.cris19493953
dc.identifier.issn1463-9262
dc.identifier.urihttp://dx.doi.org/10.1039/C7GC02671D
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12996
dc.language.isoenen_UK
dc.publisherRoyal Society of Chemistryen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.titleSuperbase ionic liquids for effective cellulose processing from dissolution to carbonisationen_UK
dc.typeArticleen_UK

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