Finishing method for wool fabric by using keratinase and chitosan

A technology of keratinase and chitosan, applied in the biochemical treatment of enzymes/microorganisms, animal fiber, fiber treatment, etc., can solve the problem of low grafting efficiency, and achieve improved bonding fastness, mild conditions and good antibacterial properties. Effect

Active Publication Date: 2017-08-22
无锡协新毛纺织股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To graft chitosan onto the wool surface, in addition to the physical adsorption method, there are also some studies using chemical grafting methods, most of which use the amino groups on the chitosan to condense wi

Method used

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  • Finishing method for wool fabric by using keratinase and chitosan
  • Finishing method for wool fabric by using keratinase and chitosan
  • Finishing method for wool fabric by using keratinase and chitosan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: The wool fabric selected in this example is all-wool gabardine, and the selected mercapto group introducing agent is cysteine.

[0027] (1) Chitosan sulfhydryl modification process: Dissolve 0.5g chitosan in 50mL distilled water containing 0.348g 1-hydroxybenzotriazole, stir well and add cysteine ​​and 1-(3-dimethyl Aminopropyl)-3-ethylcarbodiimide salt, the mol ratio of chitosan / cysteine / 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide salt is 1:2:1, then use 10mol / L sodium hydroxide solution to adjust the pH to 5, react at room temperature in the dark for 5 hours, precipitate the product with absolute ethanol, extract with acetone, vacuum-dry at 50°C, and store at 4°C;

[0028] (2) Wool reduction pretreatment process: the wool fabric is extracted and degreased with acetone at 76°C, washed with water, dried in an oven at 50°C, treated with keratinase, the bath ratio is 1:50, and the reaction time is 10h. The reaction temperature is 45°C, the dosage of kerat...

Embodiment 2

[0034] Embodiment 2: the selected wool fabric of this example is full wool gabardine, and the selected mercapto group introducing agent is thioglycolic acid

[0035] (1) Chitosan sulfhydryl modification process: dissolve 0.5g chitosan in 50mL distilled water containing 0.348g 1-hydroxybenzotriazole, stir well and add thioglycolic acid and 1-(3-dimethylaminopropyl Base)-3-ethylcarbodiimide salt, the mol ratio of chitosan / mercaptoacetic acid / 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide salt is 1:2: 1. Then use 10mol / L sodium hydroxide solution to adjust the pH to 6, react at room temperature in the dark for 5 hours, precipitate the product with absolute ethanol, extract with acetone, vacuum-dry at 40°C, and store at 4°C;

[0036] (2) Wool reduction pretreatment process: the wool fabric is extracted and degreased with acetone at 76°C, washed with water, dried in an oven at 50°C, treated with keratinase, the bath ratio is 1:50, and the reaction time is 5h. The reaction temperatu...

Embodiment 3

[0042] Embodiment 3: the selected wool fabric of this example is all-wool women's clothing, and the selected mercapto group introducing agent is N-acetyl-L-cysteine

[0043] (1) Chitosan sulfhydryl modification process: dissolve 0.5g chitosan in 50mL distilled water containing 0.348g 1-hydroxybenzotriazole, stir well and add N-acetyl-L-cysteine ​​and 1- (3-Dimethylaminopropyl)-3-ethylcarbodiimide salt, chitosan / N-acetyl-L-cysteine / 1-(3-dimethylaminopropyl)-3 - The molar ratio of ethyl carbodiimide salt is 1:2:1, then adjust the pH to 7 with 10mol / L sodium hydroxide solution, react at room temperature in the dark for 3 hours, the product is precipitated with absolute ethanol, extracted with acetone, 50°C Vacuum dried and stored at 4°C;

[0044] (2) Wool reduction pretreatment process: the wool fabric is extracted and degreased with acetone at 76°C, washed with water, dried in an oven at 50°C, treated with keratinase, the bath ratio is 1:50, and the reaction time is 5h. The re...

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Abstract

The invention discloses a finishing method for a wool fabric by using keratinase and chitosan and belongs to the technical field of application of wool fabric dyeing and finishing in the wool industry. The method comprises the steps of catalytically degrading a disulfide bond in a wool surface scale layer by using keratinase to generate free sulfydryl; and combining the free sulfydryl with chitosan modified with sulfydryl in advance in a form of disulfide bond, thereby grafting a functional chitosan macromolecule into the wool fiber surface and providing the wool fabric with anti-felting property and antibacterial property. The anti-felting property and the antibacterial property of the wool fabric treated through the method are obviously improved, other properties are also improved to a certain extent, and especially, the dyeing property of the wool fabric is greatly improved. Compared with a traditional chemical technology, the method is less in pollution; and furthermore, the chitosan is finished on the fabric in the form of a covalent bond, so that the functionality is more lasting, which is an outstanding advantage of the method in comparison with other technologies.

Description

technical field [0001] The invention relates to a method for finishing wool fabrics by using keratinase and chitosan, especially a method for using keratinase / chitosan to perform anti-felting and antibacterial finishing on wool fabrics, belonging to wool fabrics in the wool spinning industry The application technology field of dyeing and finishing processing. Background technique [0002] Wool fabric is prone to felt shrinkage due to its special scale structure when washed in a washing machine, which makes the fabric smaller in size, less elastic, and rough in hand, which seriously affects its appearance and wearability. Therefore, the "machine washable" processing (i.e. anti-felting finishing) of wool fabrics has been the focus and focus of research at home and abroad for many years. In addition, wool is a protein fiber, which is a good nutrient substance for various microorganisms. Under certain temperature and humidity conditions, microorganisms, especially bacteria and ...

Claims

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Application Information

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IPC IPC(8): D06M16/00D06M15/03C08B37/08D06M101/12
CPCC08B37/003D06M15/03D06M16/00D06M16/003D06M2101/12D06M2200/45
Inventor 朱华君王强张盼邱晓忠余圆圆范雪荣王平袁久刚
Owner 无锡协新毛纺织股份有限公司
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