| Abstract: | Conclusions 1. To compare the properties of cellulose xanthates made by xanthation of alkali cellulose in an organic solvent medium, in a quasi-liquid state and in carbon disulphide vapour, the change in the properties of xanthate solutions with time was studied.2. Solutions of quasi-liquid xanthate differ by increased viscosity and decreased ripeness, which involves increased structure-formation in the solution, because of the higher degree of polymerisation of the cellulose and the lower degree of esterification of the cellulose xanthate.3. The decomposition rate of quasi-liquid xanthate in the initial ripening period of the viscose is higher than the decomposition rate of standard xanthate because of the increased degree of esterification of the secondary hydroxyl groups of the cellulose macromolecules, and the complication of secondary esterification of cellulose xanthate in solution.All-Union Scientific Research Institute for Man-Made Fibres. Translated from Khimicheskie Volokna, No. 2, pp. 33–35, March–April, 1969. |
