1331734-64-5Relevant articles and documents
Dimethyl phosphorothioate and phosphoroselenoate ionic liquids as solvent media for cellulosic materials
Hummel, Michael,Froschauer, Carmen,Laus, Gerhard,Roeder, Thomas,Kopacka, Holger,Hauru, Lauri K.J.,Weber, Hedda K.,Sixta, Herbert,Schottenberger, Herwig
experimental part, p. 2507 - 2517 (2011/10/31)
A series of novel ionic liquids comprising two asymmetric phosphate-derived anions, namely dimethyl phosphorothioate and dimethyl phosphoroselenoate, and several imidazolium and non-imidazolium-based cations was prepared via a facile synthetic route. Thermal degradation was studied by dynamic thermogravimetric analysis (TGA) revealing a slightly higher stability of the imidazolium ionic liquids and an overall low thermal stability for the phosphoroselenoate salts. Long-term moisture sorption analysis showed correlation with the polarity of the cation and differences in absorption and desorption kinetics. Finally, a Eucalyptus globulus kraft paper grade pulp was dissolved and subsequently regenerated to assess the degradation of the various molecular weight fractions by size exclusion chromatography. In addition, pre-extracted xylan was subjected to the same dissolution procedure to examine the degradation of low-molecular weight components in more detail.
