Direktdosierung von Feststoff-Dispersionen

Report of the research project on spinning of cellulose fibers by means of the Lyocell process using N-methyl morpholin-N-oxide as the solvent. In course of the spinning process, dispersed solids like pigments may be added to the spinning solution and thus be incorporated into the resulted cellulose fibers. Addition of the dispersed solids should be performed near the spinning die to prevent thinning effects of the spinning solution and diminish 'contamination' of the spinning line. Therefor, an existing spinning line has been modified to enable the direct dosing of the solid material, dispersed in N-methylmorpholin-N-oxide. The obtained fibers were characterized by strength, elongation and finess and the spinning process could be optimized.SIGLEAvailable from TIB Hannover: F03B61 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Wirtschaft und Technologie (BMWi), Berlin (Germany)DEGerman