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The role of 1-methylimidazole as a co-solvent for cellulose in imidazolium based IL solutions

Carina Olsson (Institutionen för kemi- och bioteknik) ; Gunnar Westman (Institutionen för kemi- och bioteknik, Organisk kemi)
In 5th workshop on cellulose, regenerated cellulose and cellulose derivatives, Abstracts. p. 8-12. (2012)
[Konferensbidrag, övrigt]

Dissolution of cellulose in ionic liquids (IL) can be facilitated and the viscosity of the resulting solutions can be reduced if a co-solvent is introduced. In this study the molecular solvent N-methylimidazole (MIM) was used as a dispersing agent and co-solvent for dissolution of cellulose in the ionic liquid 1-ethyl-3-methylimidazolium acetate (EMIMAc). It turned out that only a small amount of EMIMAc was needed to dissolve the cellulose, corresponding to an IL to AGU ratio of around 1.5 for 10 % (w/w) cellulose solutions. At the same time, viscosity of the solutions was significantly reduced as a consequence of increasing relative amount of co-solvent, resulting in an optimal solvent to co-solvent ratio for each cellulose concentration.

Oral presentation.

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Denna post skapades 2013-09-05. Senast ändrad 2016-02-01.
CPL Pubid: 182844


Institutioner (Chalmers)

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


Organisk kemi
Pappers-, massa- och fiberteknik

Chalmers infrastruktur