High-resolution C-13 NMR studies of cellulose and cellulose oligomers in ionic liquid solutions

High-resolution C-13 NMR studies of cellulose and cellulose oligomers dissolved in the ionic liquid (IL) 1-butyl-3-methylimidazolium chloride ([ C(4)mim] Cl) show that the beta-( 1-->4)-linked glucose oligomers are disordered in this medium and have a conformational behavior which parallels the one observed in water, and thus, reveal that the polymer is disordered in IL solution as well.