Electrospinning of cellulose nanofibers from ionic liquids: The effect of different cosolvents
Artikel i vetenskaplig tidskrift, 2012

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.

polymer

temperature

fibers

parameters

electrospinning

dissolution

rheological properties

cellulose

ionic liquid

solvation

solvent

dissolution

nanofibers

transport-properties

biopolymer

Författare

Linda Härdelin

Chalmers, Kemi- och bioteknik, Polymerteknologi

Johannes Thunberg

Chalmers, Kemi- och bioteknik

Erik Per Perzon

Swerea IVF AB

Chalmers University of Technology

Gunnar Westman

Chalmers, Kemi- och bioteknik, Organisk kemi

Wallenberg Wood Science Center (WWSC)

Pernilla Walkenström

Chalmers University of Technology

Swerea IVF AB

Paul Gatenholm

Wallenberg Wood Science Center (WWSC)

Chalmers, Kemi- och bioteknik, Polymerteknologi

Journal of Applied Polymer Science

0021-8995 (ISSN) 1097-4628 (eISSN)

Vol. 125 1901-1909

Ämneskategorier

Kemi

DOI

10.1002/app.36323