Preparation method of enteromorpha regenerated cellulose fibers
A technology of regenerated cellulose and regenerated fibers, applied in the direction of single-component cellulose rayon, fiber chemical characteristics, spinning solution preparation, etc., to achieve preferential policies for marine economic development, improve utilization value and market benefits, and feel soft Effect
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[0018] A preparation method of Enteromorpha regenerated cellulose fiber, comprising the following steps:
[0019] Step S10: pulverize Enteromorpha enteromorpha and place it in a hydrolysis solution to hydrolyze the solution;
[0020] Step S20: adding sodium hydroxide to the hydrolysis solution, and then cooking to remove fatty acids in Enteromorpha to obtain a mixed solution A;
[0021] Step S30: adding ethanol to the mixed solution A, and then removing the water to obtain Enteromorpha pulp with higher cellulose content;
[0022] Step S40: adding sodium hypochlorite to the Enteromorpha pulp to bleach the Enteromorpha pulp to obtain an Enteromorpha regenerated fiber stock solution;
[0023] Step S50: adding dimethyl sulfoxide and N,N-dimethylformamide to Enteromorpha regenerated fiber stock solution to obtain Enteromorpha regenerated cellulose fiber spinning stock solution;
[0024] Step S60: Send the original spinning solution of Enteromorpha regenerated cellulose fiber into...
Embodiment 1
[0032] Weigh 30kg of fresh Enteromorpha, leak water and air-dry it for 12 hours, weigh it to 22.1kg, and crush it. Stir and crush the air-dried Enteromorpha, and hydrolyze it for 240 minutes. Put into hydrolysis solution by Enteromorpha volume 2 times, and hydrolysis solution is the aqueous solution of NMMO4-methylmorpholine-N-oxide compound and ethanol, and the mass percentage composition of 4-methylmorpholine-N-oxide compound in the hydrolysis solution is 25%, and the mass percentage of ethanol is 3%. The mass percent concentration of absolute ethanol is ≥98%.
[0033] Add sodium hydroxide according to the amount of 5g sodium hydroxide added to 1L of hydrolysis solution, and cook in water for 20 minutes at a water temperature of 80-90°C to extract and remove the fatty acids in enteromorpha protein. Heat the cooling water with steam to wash and sterilize, at a temperature of 85°C for 20 minutes, add 10ml of ethanol with a mass percentage concentration of 85%, and remove wate...
Embodiment 2
[0035] Weigh 30kg of fresh Enteromorpha, leak water and air-dry it for 12 hours, weigh it to 22.1kg, and crush it. Stir and crush the air-dried Enteromorpha, and hydrolyze it for 300 minutes. Put into hydrolysis solution by Enteromorpha volume 3 times, and hydrolysis solution is the aqueous solution of NMMO4-methylmorpholine-N-oxide compound and ethanol, and the mass percentage composition of 4-methylmorpholine-N-oxide compound in the hydrolysis solution is 20%, and the mass percentage of ethanol is 3%. The mass percent concentration of absolute ethanol is ≥98%.
[0036] Add 5g of sodium hydroxide to 1L of the hydrolysis solution, and cook for 30 minutes at a water temperature of 80-90°C to extract and remove the fatty acids in Enteromorpha protein. Heat the cooling water with steam to wash and sterilize, at a temperature of 80°C for 30 minutes, add 20ml of 85% ethanol at a temperature of 60°C, and remove water to obtain Enteromorpha pulp with a high cellulose content. Add 0...
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