Method for preparing viscose fiber by sisal leaves
A technology of viscose fiber and sisal, which is applied in the field of synthetic fiber manufacturing, can solve serious environmental pollution and other problems, achieve the effect of improving economic value and meeting environmental protection requirements
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Embodiment 1
[0026] A method for producing viscose fiber with sisal leaves, comprising the following steps:
[0027] (1) sorting sisal leaves;
[0028] (2) mechanically knocking or rolling is adopted, and the mesophyll jelly of the sisal leaves is scraped off by the carding method, and the thick sisal leaf cellulose fibers are obtained by washing;
[0029] (3) microbial and hydrogen peroxide treatment to remove residual colloid;
[0030] (4) Preparation of alkali cellulose;
[0031] (5) Alkali cellulose yellowing and dissolving to prepare spinning slurry;
[0032] (6) Spinning slurry degassing;
[0033] (7) Wet spinning.
[0034] The sorted sisal leaves are mechanically beaten and then combed and separated, the mesophyll gum of the sisal leaves is scraped off, and the leaves are washed with water to obtain rough sisal leaf fibers. The crude fiber is immersed in an aqueous solution containing 3% bacillus according to the weight ratio of the crude fiber to the mold solution being 1:7, a...
Embodiment 2
[0037] The sorted sisal leaves are mechanically tapped and then combed and separated to scrape off the mesophyll gum of the sisal leaves, and the leaves with the mesophyll gum removed are washed with water to obtain rough sisal leaf fibers. According to the weight ratio of the crude fiber to the mold solution being 1:5, the crude fiber is immersed in an aqueous solution containing 2% bacillus, and fermented at 40° C. for 30 days.
[0038] The fermented crude fiber is washed with water, soaked in 1% by weight hydrogen peroxide solution and cooked, the weight ratio of sisal leaf cellulose fiber and hydrogen peroxide solution is 1:7, and the cooking temperature is 80°C , the time is 4 hours to obtain pure sisal leaf alpha cellulose≥96%.
Embodiment 3
[0040] The sorted sisal leaves are mechanically tapped and then combed and separated to scrape off the mesophyll gum of the sisal leaves, and the leaves with the mesophyll gum removed are washed with water to obtain rough sisal leaf fibers. According to the weight ratio of the crude fiber to the mold solution being 1:10, the crude fiber is immersed in an aqueous solution containing 41% white rot fungus, and fermented at 40° C. for 10 days.
[0041] The fermented crude fiber is washed with water, soaked in a 4% by weight aqueous solution of hydrogen peroxide for cooking, the weight ratio of sisal leaf cellulose fiber and hydrogen peroxide solution is 1:7, and the cooking temperature is 100°C , the time is 2 hours to obtain pure sisal leaf alpha cellulose is 96.5%.
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