A novel cost-effective choline chloride/ionic liquid solvent for all-cellulose composite production

Hester Oosthuizen, Elizabeth L. du Toit*, Mattheüs T. Loots, Maria Atanasova, James Wesley-Smith, Stephani Crous, Michelle Weldhagen, Walter W. Focke

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The potential of a blended cellulose solvent, consisting of a 1:1 mass ratio of choline chloride with the ionic liquid 1-ethyl-3-methylimadazolium acetate, was evaluated by using a film-casting technique. When comparing films produced with the neat ionic liquid to casting products from the mixed solvent, mechanical properties could largely be retained, while transparency was somewhat impaired. This is attributed to a fibrous microstructure and a higher degree of crystallinity caused by incomplete dissolution of the initial cellulose fibres. The presence of these residual fibres significantly reduced shrinkage during the film formation process. Functional group analyses, together with information on their crystallographic structure, proved that these film-like products should be classified as all-cellulose composites (ACCs). Statistical analyses of tensile properties justify further research on the mixed solvent system for cellulose processing.

Original languageEnglish
Pages (from-to)127-140
Number of pages14
Issue number1
Publication statusPublished - Jan 2023
Externally publishedYes


  • 1-ethyl-3-methylimadazolium acetate
  • All-cellulose composites
  • Cellulose solvents
  • Choline chloride


Dive into the research topics of 'A novel cost-effective choline chloride/ionic liquid solvent for all-cellulose composite production'. Together they form a unique fingerprint.

Cite this