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Electrospinning of cellulose nanofibers from ionic liquids: The effect of different cosolvents

Linda Härdelin (Institutionen för kemi- och bioteknik, Polymerteknologi) ; Johannes Thunberg (Institutionen för kemi- och bioteknik) ; E. Perzon ; Gunnar Westman (Institutionen för kemi- och bioteknik, Organisk kemi) ; P. Walkenstrom ; Paul Gatenholm (Institutionen för kemi- och bioteknik, Polymerteknologi)
Journal of Applied Polymer Science (0021-8995). Vol. 125 (2012), 3, p. 1901-1909.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: cellulose, ionic liquid, electrospinning, dissolution, nanofibers, rheological properties, transport-properties, fibers, temperature, dissolution, biopolymer, solvent, polymer, parameters, solvation

Denna post skapades 2012-05-31. Senast ändrad 2016-02-01.
CPL Pubid: 158296


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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Polymerteknologi (2005-2014)
Institutionen för kemi- och bioteknik (2005-2014)
Institutionen för kemi- och bioteknik, Organisk kemi (2006-2014)



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Electrospinning Nanofibres from Cellulose Dissolved in Ionic Liquid