REACTIVITY OF CELLULOSE AND CHARACTERISTI CS OF VISCOSE

The reactivity of cellulose obtained from different sources has been t ested by means oi xanthogenate derivatisation. Different charges of ca rbon disulphide were used for the production of cellulose xanthogenate . The clogging value of the viscose was taken as the measure of the re activity of cellulose. Additionally the molecular weight distribution of cellulose and regenerated cellulose was investigated. In order to f ind relations to the state of solution of the viscose the distribution of the xanthogenate groups within the cellulose chains was detected b y means of size exclusion chromatography in connection with a multidet ection system. The shape and the size of aggregates occurring in the v iscose were characterized by light scattering and intrinsic viscosity measurements. Size exclusion chromatography in connection with special detection systems is a useful tool for the characterization of the st ate of solution of viscose in dependence on xanthogenate charges and c ellulose reactivity. A correlation between reactivity of the cellulose and state of solvent or xanthogenated aggregates could be established .