Dyeing Chitin/Cellulose Composite Fibers with Reactive Dyes

摘要

The dyeing properties of chitin/cellulose composite fibers―Crabyon~(~R) (CR)―for four reactive dyes are examined and compared with those of viscose rayon and partially deacetylated chitin. The CR fibers show high fixation for dyeing with CI Reactive Blue 5 with a monochlorotriazinyl group in a weakly acidic solution and with CI Reactive Blue 19 with a sulfatoethylsulfonyl group from weakly acidic to weakly alkaline solutions. The CR fibers can be dyed with CI Reactive Blue 19 in wide pH ranges, compared with viscose rayon, which cannot be dyed at these same pH ranges.