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Interactions of Ionic Liquids with Polysaccharides – 7: Thermal Stability of Cellulose in Ionic Liquids and N-Methylmorpholine-N-oxide

✍ Scribed by Susann Dorn; Frank Wendler; Frank Meister; Thomas Heinze

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
375 KB
Volume
293
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

The thermal behavior of cellulose dissolved in ionic liquids was studied in comparison to NMMO solutions. The cellulose solutions were characterized by reaction calorimetry and UV‐vis spectroscopy. Generation of chromophoric substances in cellulose/IL solutions is minimized by exposing to temperatures of above 100 °C for longer time periods. Dynamic calorimetric investigations revealed first thermal activities above 180 °C applying EMIMac and above 200 °C for BMIMCl and five other ILs tested. Moreover, even in the case of modified cellulose/IL solutions, e.g., activated charcoal, only a slight decline of onset temperatures was registered compared to modified cellulose/NMMO solutions.

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