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Electrospinning of cellulose nanofibers from ionic liquids: The effect of different cosolvents
RISE, Swerea, Swerea IVF.
Chalmers University of Technology.
RISE, Swerea, Swerea IVF.
Chalmers University of Technology.
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2012 (English)In: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 125, no 3, p. 1901-1909Article in journal (Refereed)
Abstract [en]

Cellulose was electrospun with various concentrations of ionic liquid and cosolvent. Three different cosolvents were used in this study; dimethylacetamide (DMAc), dimethyl formamide (DMF), and dimethyl sulfoxide (DMSO). The cosolvents were added to modify the viscosity, electrical conductivity, and surface tension of the solutions. The solubility of cellulose in ionic liquids is highly affected by changes in solvent properties on the molecular level in the binary solvent systems. The difference in molecular structure of the cosolvents and the interactions between cosolvent and ionic liquid can explain the difference in dissolution power of the cosolvents. Scanning electron microscope (SEM) was used to characterize electrospun cellulose fibers. For the systems tested the importance of having a rather high viscosity and high surface tension, and some degree of shear thinning to produce fibers is shown. © 2012 Wiley Periodicals, Inc.

Place, publisher, year, edition, pages
2012. Vol. 125, no 3, p. 1901-1909
Keywords [en]
cellulose, dissolution, electrospinning, ionic liquid, nanofibers
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-13345DOI: 10.1002/app.36323Scopus ID: 2-s2.0-84860224244OAI: oai:DiVA.org:ri-13345DiVA, id: diva2:973551
Available from: 2016-09-22 Created: 2016-09-22 Last updated: 2017-11-21Bibliographically approved

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