Partiell acetylierte cellulose — synthese und bestimmung der substituentenverteilung mit hilfe der ¹H NMR‐spektroskopie

Abstract

Abstract Partially acetylated cellulose was synthesized by homogeneous acidic and basic saponification of cellulose triacetate (fully acetylated cellulose) and by homogeneous acetylation of cellulose dissolved in molten N ‐ethyl‐pyridinium chloride. The result of 1 H NMR spectroscopic investigations was that acetylation and acid saponification lead to products with different esterification of the hydroxy groups at C 2 , C 3 and C 6 whilst basic saponification leads to uniform acetylation. Furthermore, the solubility of the cellulose acetates depends on the method of preparation.