Dry‐jet wet electrospinning of native cellulose microfibers with macroporous structures from ionic liquids

Mohamed Basel Bazbouz, Mark Taylor, Daniel Baker, Michael E Ries, Parikshit Goswami

Research output: Contribution to journalArticle

Abstract

In this study, we have provided a review of electrospun cellulose micro/nanofibres from ionic liquids and co-solvents from which we identify a lack of previous studies focusing on the structural morphology of the dry-jet wet electrospun native cellulose fibres from ionic liquids. We have therefore aimed to investigate factors influencing the structural morphology of cellulose/ionic liquid electrospun fibres and investigate the coagulation parameters on this morphology. The electrospinning of 10% w/v cellulose/([C2MIM][OAc] /MIM) (1/1, v/v) solution was shown to produce macroporous fibres with average diameters of 2.8±1.4 µm with pore sizes from 100-200 nm. We have found that coagulation bath type and immersion time affect the morphological structure of the electrospun fibres. The fibre spinnability, formation, and morphological structure are mainly dependent on the method used to collect and coagulate/solidify the fibres. The physical properties of the dissolved cellulose were measured and these are discussed in terms of the solution spinnability. The structural morphology of the electrospun cellulose fibres was characterised by SEM, and lastly the extraction of ionic liquid from the fibre body was confirmed by 1H NMR. The electrospun cellulose fibres morphology shows the formation of both micron and nanometre sized fibres with different morphological "macroporous" structures.
Original languageEnglish
Article number47153
Number of pages17
JournalJournal of Applied Polymer Science
Volume136
Issue number10
Early online date8 Oct 2018
DOIs
Publication statusPublished - 10 Mar 2019

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Ionic Liquids
Electrospinning
Ionic liquids
Cellulose
Fibers
Coagulation
Nanofibers
Pore size
Physical properties
Nuclear magnetic resonance

Cite this

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abstract = "In this study, we have provided a review of electrospun cellulose micro/nanofibres from ionic liquids and co-solvents from which we identify a lack of previous studies focusing on the structural morphology of the dry-jet wet electrospun native cellulose fibres from ionic liquids. We have therefore aimed to investigate factors influencing the structural morphology of cellulose/ionic liquid electrospun fibres and investigate the coagulation parameters on this morphology. The electrospinning of 10{\%} w/v cellulose/([C2MIM][OAc] /MIM) (1/1, v/v) solution was shown to produce macroporous fibres with average diameters of 2.8±1.4 µm with pore sizes from 100-200 nm. We have found that coagulation bath type and immersion time affect the morphological structure of the electrospun fibres. The fibre spinnability, formation, and morphological structure are mainly dependent on the method used to collect and coagulate/solidify the fibres. The physical properties of the dissolved cellulose were measured and these are discussed in terms of the solution spinnability. The structural morphology of the electrospun cellulose fibres was characterised by SEM, and lastly the extraction of ionic liquid from the fibre body was confirmed by 1H NMR. The electrospun cellulose fibres morphology shows the formation of both micron and nanometre sized fibres with different morphological {"}macroporous{"} structures.",
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Dry‐jet wet electrospinning of native cellulose microfibers with macroporous structures from ionic liquids. / Basel Bazbouz, Mohamed; Taylor, Mark; Baker, Daniel; Ries, Michael E; Goswami, Parikshit .

In: Journal of Applied Polymer Science, Vol. 136, No. 10, 47153, 10.03.2019.

Research output: Contribution to journalArticle

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