Abstract
Some properties of the acetate rayon which was prepared through acetylation of viscose rayon with acetic anhydride vapor were measured. Polymerization degree falls from 300 of the raw viscose rayon to 200-150. Although under suitable conditions acetylated fibers with higher tensile strength than the original viscose fibers may be obtained, a fall of tenacity (g/den) is inevitable as the denier of fibers increases with acetylation. Highly acetylated fibers can be dyed uniformly by celliton dyestnff etc.. Dyed viscose fibers may also be acetylated smoothly.
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