A kind of solvent method high wet modulus protein fiber and preparation method thereof
A high wet modulus, protein fiber technology, applied in the textile field, can solve the problems of viscose fiber wet modulus, low dry strength and wet strength, high energy consumption of viscose fiber, complicated process, etc., and achieves soft hand feeling and high safety performance. , the effect of good air permeability
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[0062] A preparation method of solvent method high wet modulus protein fiber, comprising the following steps:
[0063] (A) Activation
[0064] The activation process is simple, the addition of chemical reagents is small, the whole process is about 1 hour, the time-consuming is short, and the operation is convenient. The process is as follows:
[0065] Prepare process water → add pulp → adjust pH value → add cellulase → terminate activation.
[0066] Among them, the preparation of process water: deionized water is used for process water; parameter requirements: conductivity 2 , pH value 6~8, temperature 20~80 ℃.
[0067] Add pulp: use wood pulp or bamboo pulp, the degree of polymerization is 300-1500.
[0068] Adjust pH: adjust pH to 4-6 with acid and alkali.
[0069] Add cellulase: use liquid cellulase, optional commercial name AL70, product number IPL 5B06610, supplier BIOPRACT.
[0070] Termination of activation: Add alkali to adjust pH to 9-13.
[0071] (B) Pressi...
Embodiment 1
[0088] Add the pulp with a degree of polymerization of 500 to a conductivity of 2 , pH value: 6.8, temperature: 50 ℃ process water, adjust the pH value to 5, add cellulase for activation for one hour, add sodium hydroxide to terminate the activation, and adjust the pH value to 10.5; the pulp after termination of activation is dehydrated by vacuum After pressing, the water content of the aqueous cellulose was controlled to be 48wt%, and pulverized into particles of 3cm*3cm; then a protein mixed solution and an 81wt% N-methylmorpholine-N-oxide aqueous solution were added, and the protein mixed solution was An aqueous solution containing 5-10wt% protein and 5-10wt% montmorillonite; wherein the mass ratio of aqueous cellulose and protein mixed solution is 1:0.22, and the mass ratio of aqueous cellulose and N-methylmorpholine-N-oxide aqueous solution is It is 1:3.8, and the pre-dissolved pulp is obtained after the pulp is swollen; the outlet temperature of the pre-dissolved pulp is ...
Embodiment 2
[0093] Add the pulp with a degree of polymerization of 550 to a conductivity of 2 , pH value: 6.0, temperature: 50 ℃ of process water, adjust the pH value to 4.5, add cellulase to activate for one hour, add sodium hydroxide to terminate the activation, and adjust the pH value to 11; the porridge after termination of activation is vacuum dehydrated After pressing, the water content of the aqueous cellulose was controlled to be 53wt%, and pulverized into particles of 3cm*3cm; then a protein mixed solution and an 85wt% N-methylmorpholine-N-oxide aqueous solution were added, and the protein mixed solution was An aqueous solution containing 5-10wt% protein and 5-10wt% montmorillonite; wherein the mass ratio of aqueous cellulose and protein mixed solution is 1:0.2, and the mass ratio of aqueous cellulose and N-methylmorpholine-N-oxide aqueous solution is It is 1:3.3, and the pre-dissolved pulp is obtained after the pulp is swollen; the outlet temperature of the pre-dissolved pulp is ...
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