High resolution solid state 13C-NMR study of heterogeneous reactions on cotton cellulose

Abstract

High resolution solid state 13C NMR spectra of cellulose of different origins present complexe features: thin multiplets and broad lines. Chemical substitution of accessible hydroxyl groups by −OCD3 and −OTMS groups of cotton fibers has been achieved in mild conditions by means of heterogeneous reactions. The observed modifications of the solid stage 13C spectra of modified cotton celluloses are related to morphological substituted sites.