Konjaku high hygroscopicity fibre and its preparation method

[0016] Konjac fine powder is protected with 40% ethanol solution of 5 times of volume, and after colloid mill circulates and grinds for 8 minutes, dries up, after washing with 40% ethanol solution of pH4, vacuum-drying, intrinsic viscosity is 485cm 3 / g, take water as solvent, be made into konjac powder concentration by weight and be 12.0%, sodium tetraborate concentration be the spinning slurry of 0.03%; Spinning slurry is filtered through 180 mesh sieves, and after vacuum defoaming treatment, with The metering pump is transported to the spinning head for extrusion, and the tow enters the coagulation bath. The coagulation bath is equipped with an 85% ethanol solution with a pH of 8.0, and is stretched while coagulating. After being washed with acidic ethanol, it is wound up and dried to obtain konjac superabsorbent fiber. The dry strength is 2.6cN / dtex, the fiber length is 28mm, the water absorption capacity is 90g (water) / g (fiber), and the salt water absorption is 85 (sa

[0018] Konjac fine powder is protected with 40% ethanol solution of 5 times of volume, and after colloid mill circulates and grinds for 5 minutes, dries up, after washing with 40% ethanol solution of pH4, vacuum-drying, intrinsic viscosity is 610cm 3 / g, using water as a solvent, is made into a spinning slurry with a concentration of konjac powder of 3.0% and a concentration of boric acid of 0.08% by weight; Transported to the spinning head for extrusion, the tow enters the coagulation bath, and the coagulation bath is equipped with a 95% ethanol solution of pH 8.5, stretched while coagulating, and the draw ratio is controlled at 2.0, and finally passed through 65% acidic ethanol of pH 4 After washing, it is wound and dried to obtain konjac superabsorbent fiber. The dry strength is 2.8cN / dtex, the fiber length is 35mm, the water absorption capacity is 96g (water) / g (fiber), and the salt water absorption is 89 (salt water) / g (fiber).