Comparison of Solution-State Properties of Cellulose Dissolved in NaOH/Water and in Ionic Liquid (EMIMAc)

Tatiana Budtova (1) , Magali Egal (1) , Roxane Gavillon (1) , Martin Gericke (1, 2) , Thomas Heinze (2, 3) , Tim Liebert (2, 3) , Cédric Roy (1) , Kerstin Schlufter (1, 2, 3) , Patrick Navard (1)

1 CEMEF - Centre de Mise en Forme des Matériaux
2 Centre of Excellence for Polysaccharide Research
3 Research Centre for Medical Technology and Biotechnology GmbH

The rheological and hydrodynamic properties of cellulose dissolved in (8-9%)NaOH/water and in 1-ethyl-3-methylimidazolium acetate (EMIMAc) were studied and compared. The influence of cellulose type, concentration, solution temperature and presence of additives (in the case of cellulose dissolved in NaOH/water) was investigated. While the dissolution power of NaOH/water decreases with temperature increase and cellulose solutions are gelling, the intrinsic viscosities of cellulose in NaOH/water and in EMIMAc are very close in absolute values and behave in the same way with temperature. This paradox was assumed to be due to the role of water in NaOH/water hydrates.

Mots clés: cellulose; water solutions

Domaines: Matériaux

Tatiana Budtova, Magali Egal, Roxane Gavillon, Martin Gericke, Thomas Heinze, et al.. Comparison of Solution-State Properties of Cellulose Dissolved in NaOH/Water and in Ionic Liquid (EMIMAc). Edited by Tim F. Liebert, Thomas J. Heinze, Kevin J. Edgar. Cellulose Solvents: For Analysis, Shaping and Chemical Modification, American Chemical Society, pp.179-196, 2010, ACS Symposium Series, Vol. 1033, 978-0-8412-0006-7. ⟨10.1021/bk-2010-1033.ch010⟩. ⟨hal-00522033⟩