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The cellulose solvent system N,N-dimethylacetamide/lithium chloride revisited: the effect of water on physicochemical properties and chemical stability

Rosenau, T. ; Potthast, A. ; Buchner, Richard ; Bruglachner, Hartmut ; Röder, T. ; Ebner, G. ; Kosma, P.



Abstract

The water content in the binary system N,N-dimethylacetamide/lithium chloride (DMAc/LiCl), a common cellulose solvent, was proven to be a crucial parameter. A quick detn. of water content in DMAc based on the solvatochromism of a UV-active betain probe dye was developed and validated. An analogous method, based on the solvatochromic fluorescence shift of Zelinskij's dye, which strongly depends ...

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