Composition of the viscose and the parameters of the precipitation liquor as factors in the spinning conditions for viscose rayon yarn

Vasyutina, A. A.; Filicheva, T. B.; Butkova, N. T.; Frenkel, Sally R.; Demchenko, L. A.; Pakshver, A. B.; Finger, G. G.

doi:10.1007/bf00548573

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“…The mercerized pulp is treated with carbon disulfide to make an orange solution called viscose, or cellulose xanthate. The viscose solution is then extruded through a slit into a bath of dilute sulfuric acid and sodium sulfate to reconvert the viscose into cellulose [ 5 ]. The film is then passed through several more baths, one to remove sulfur, one to bleach the film, and one to add glycerin to prevent the film from becoming brittle [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Structure, Morphology, and Permeability of Cellulose Films

et al. 2022

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The work is focused on the study of the influence of the cellulose type and processing parameters on the structure, morphology, and permeability of cellulose films. The free volume of the cellulose films was evaluated by the sorption of n-decane, which is a non-solvent for cellulose. The structural features of the membranes and their morphology were studied using X-ray diffraction, IR spectroscopy, SEM, and AFM methods. The characteristic features of the porous structure and properties of cellulose films regenerated from cellulose solutions in the N-methylmorpholine-N-oxide (NMMO) and cellophane films were compared. Generally, cellulose films obtained from solutions in NMMO have a higher permeability and a lower rejection (as measured using Orange II dye) as compared to cellophane films. It was also found that the cellulose films have a higher ultimate strength and modulus, whereas the cellophane films are characterized by higher elongation at break.

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Section: Introductionmentioning

confidence: 99%