Binary mixtures of ionic liquids-DMSO as solvents for the dissolution and derivatization of cellulose: Effects of alkyl and alkoxy side chains.

The efficiency of mixtures of ionic liquids (ILs) and molecular solvents in cellulose dissolution and derivatization depends on the structures of both components. We investigated the ILs 1-(1-butyl)-3-methylimidazolium acetate (CMeImAc) and 1-(2-methoxyethyl)-3-methylimidazolium acetate (COMeImAc) and their solutions in dimethyl sulfoxide, DMSO, to assess the effect of presence of an ether linkage in the IL side-chain. Surprisingly, CMeImAc-DMSO was more efficient than COMeImAc-DMSO for the dissolution and acylation of cellulose.

Hyperoxia-induced lung injury is dose dependent in Wistar rats.

Oxygen is indispensable for aerobic respiration. However, the effects of hyperoxia on the lungs are poorly defined. The aim of the present study was to determine the effects of different oxygen concentrations on rat lungs.