Superior solubility of polysaccharides in low viscosity, polar, and halogen-free 1,3-dialkylimidazolium formates.
We successfully prepared low viscosity, polar, and halogen-free ionic liquids as potential solvents for a wide range of polysaccharides. A series of 1,3-dialkylimidazolium formates were produced as liquids having strong hydrogen bond acceptability. These formates had significantly lower viscosity than previously reported polar ionic liquids, in particular 1-allyl-3-methylimidazolium formate (viscosity 66cP at 25 degrees C) and 1-allyl-3-ethylimidazolium formate (67cP at 25 degrees C). Because of their strong hydrogen bond ability, various polysaccharides including amylose and (scarcely soluble) cellulose were dissolved in high concentrations under mild condition.
Fukaya
Yukinobu
Y
Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.
Sugimoto
Akiko
A
Ohno
Hiroyuki
H
D006219:Halogens; D007093:Imidazoles; D009994:Osmolar Concentration; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification; D012995:Solubility; D013816:Thermodynamics; D014783:Viscosity
D006219:Halogens; D007093:Imidazoles; D011134:Polysaccharides