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Biological enzymatic dyeing method for improving wool fiber strength

A wool fiber and biological enzyme technology, applied in the direction of dyeing, textile and paper making, etc., can solve the problems of single use, environmental user health threat, etc., and achieve the effects of improved alkali resistance, good dyeing performance and broad development prospects.

Active Publication Date: 2021-04-13
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are few reports on the repair of strong damage to wool fibers. It is reported that chemical cross-linking agents, such as glyoxal, glutaraldehyde, dioctyl ester and carbodiimide, etc., are used. These cross-linking agents are cheap, and It is easy to improve the tensile properties of fibers, but it poses a great threat to the environment and the health of users
At present, the research on the repair of strong wool damage by transglutaminase (TGase) is extensive. TGase has the ability to absorb primary amines and graft peptide chains (containing glutamine or lysine residues) into proteins. It can repair multiple damages such as chemical damage and biological damage of wool, but it has a single purpose

Method used

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  • Biological enzymatic dyeing method for improving wool fiber strength
  • Biological enzymatic dyeing method for improving wool fiber strength
  • Biological enzymatic dyeing method for improving wool fiber strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preprocessing:

[0033] The treatment process prescription and conditions: Weigh 1g of wool yarn and sodium carbonate, dissolve sodium carbonate in deionized water to prepare a 1g / L sodium carbonate solution with a bath ratio of 1:30. Soak the wool fibers in sodium carbonate solution at 40°C for 15 minutes, then wash them with absolute ethanol at 40°C for 10 minutes, rinse with deionized water, and dry the washed wool fibers at 40°C.

[0034] (2) Enzyme catalyzes the reaction between phenolic compounds and wool:

[0035] Prepare solution: prepare 0.2mol / L acetic acid-sodium acetate buffer solution, adjust the pH to 5.0, add 0.04mol / L catechol and 75U / mL laccase in sequence, bath ratio 1:30, place in the reactor for shaking Evenly, put the pretreated wool yarn into the prepared buffer solution, and shake it at 40°C for 5 hours.

[0036] (3) Post-processing:

[0037] After the wool yarn obtained in step (3) is taken out, it is frozen at -50° C. for 12 hours to inac...

Embodiment 2

[0039] (1) Preprocessing:

[0040] The treatment process prescription and conditions: put 1g of wool yarn in the low-temperature plasma treatment machine, turn on the vacuum pump, feed all the oxygen, click on the automatic mode, and perform low-temperature plasma treatment on the protein fiber, the treatment power is 100W, and the treatment time is 5 minutes .

[0041] (2) Enzyme catalyzes the reaction between phenolic compounds and wool:

[0042] Prepare solution: Prepare 0.2mol / L acetic acid-sodium acetate buffer solution, adjust the pH to 5.5, add 0.04mol / L catechol and 75U / mL laccase in sequence, bath ratio 1:50, place in the reactor for shaking Evenly, put the pretreated wool yarn into the prepared buffer solution, and shake it at 40°C for 5 hours.

[0043] (3) Post-processing:

[0044] After the wool yarn obtained in step (3) is taken out, it is frozen at -40° C. for 12 hours to inactivate the enzyme, then washed with deionized water, and dried naturally.

[0045] T...

Embodiment 3

[0052] Embodiment 3 explores the impact of laccase dosage on wool fiber dyeing

[0053] Referring to Example 1, the amount of laccase in step (2) is replaced by 25U / mL, 50U / mL, 100U / mL, 125U / mL respectively, and other conditions remain unchanged:

[0054] (1) Preprocessing:

[0055] The treatment process prescription and conditions: Weigh 1g of wool yarn and sodium carbonate, dissolve sodium carbonate in deionized water to prepare a 1g / L sodium carbonate solution with a bath ratio of 1:30. Soak the wool fibers in sodium carbonate solution at 40°C for 15 minutes, then wash them with absolute ethanol at 40°C for 10 minutes, rinse with deionized water, and dry the washed wool fibers at 40°C.

[0056] (2) Enzyme catalyzes the reaction between phenolic compounds and wool:

[0057] Prepare solution: prepare 0.2mol / L acetic acid-sodium acetate buffer solution, adjust the pH to 5.0, add 0.04mol / L catechol and 25U / mL, 50U / mL, 75U / mL, 100U / mL, 125U / mL in sequence mL laccase, bath rat...

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Abstract

The invention discloses a biological enzymatic dyeing method for improving the wool fiber strength, and belongs to the technical field of textile material modification. The characteristics that protein fiber macromolecules contain a large number of active groups such as hydroxyl groups, amino groups and carboxyl groups and easily react with polyphenol pigments formed by enzyme catalyzed phenolic compounds to form covalent binding are utilized, low-temperature dyeing of wool fibers is achieved, and meanwhile, the fiber strength is improved. The biological enzymatic dyeing method for improving the wool fiber strength is mild in operation condition and easy to control, wool fiber dyeing is safe, environmentally friendly and efficient through biological enzymes at present when environmental protection is increasingly emphasized, and the biological enzymatic dyeing method has a long-term development prospect.

Description

technical field [0001] The invention relates to a biological enzymatic dyeing method for improving the strength of wool fibers, which belongs to the textile material modification technology. Background technique [0002] Protein fibers such as wool fibers have excellent hygroscopicity, warmth retention, and softness when worn, and are widely used in the textile industry. During processing, such as scouring, spinning, weaving, dyeing, etc., the fibers will be damaged and the mechanical properties will be deteriorated. It is worth noting that because the scale layer on the surface of wool is hydrophobic, it is often dyed by high temperature process, resulting in strong The damage will seriously affect the subsequent processing of fibers and the wearing performance of fabrics, and consume a lot of energy, which is not good for the environment. Therefore, it is of great significance to seek a mild and effective dyeing method to prevent and repair wool fiber damage. [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P1/673D06P3/14D06P5/20
CPCD06P3/14D06P1/34D06P1/6735D06P5/2016D06P3/148D06M11/76D06M16/003D06M10/025D06M13/152D06P3/16D06P1/44D06P1/65118D06P1/65112D06M13/238D06P5/22D06P1/0004D06P1/38
Inventor 苏静王鸿博李洁李宇李楠楠
Owner JIANGNAN UNIV
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