Wool-fabric protease anti-felting method based on weak oxidation and cutinase pretreatment

A technology of cutinase and protease, which is applied in biochemical fiber treatment, fiber treatment, animal fiber, etc., can solve the problems of large damage to anti-felting fibers, reduce the felting rate of wool fabrics, and environmental pollution, and achieve low wool fiber damage, Shorter wetting time and better dyeing performance

Inactive Publication Date: 2009-10-28
JIANGNAN UNIV
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AI Technical Summary

Problems solved by technology

Using the present invention can improve the wettability of wool fabrics, reduce the felting shrinkage rate of woolen fabrics, solve the technical problems of large damage to wool anti-felting fibers a...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Fabric Variety: All-wool gabardine.

[0022] (1) Extraction pretreatment: the wool fabric is placed in chloroform:methanol (87:13, v / v) organic solvent solution, refluxed and extracted at 55°C for 4 hours, and then washed with ethanol and hot water to remove residual impurities on the cloth surface .

[0023] (2) Weak oxidation pretreatment: treatment bath: 30% hydrogen peroxide 2g / L, surfactant 0g / L solution, temperature 50°C, pH 8.0, treatment time 0.5 hour.

[0024] (3) Cutinase treatment: a solution of 5.0% owf of cutinase and 0 g / L of surfactant, the temperature is 60° C., the pH is 8.0, and the treatment time is 4 hours.

[0025] (4) Protease treatment: protease 2% owf, temperature 55°C, pH 8.5, treatment time 1 hour.

[0026] (5) Inactivate enzyme and wash with water.

[0027] Sample 1: only treated with weak oxidation and protease;

[0028] Sample 2: After three steps of weak oxidation, cutinase pretreatment and protease treatment.

[0029] After the above ...

Embodiment 2

[0031] Fabric type: all-wool women's clothing.

[0032] (1) Extraction pretreatment: the wool fabric is placed in carbon tetrachloride: methanol (87:13, v / v) organic solvent solution, refluxed and extracted at 55°C for 4 hours, and then washed with ethanol and hot water to remove the cloth Impurities remain on the surface.

[0033] (2) Weak oxidation treatment: treatment bath: 30% hydrogen peroxide 1g / L, surfactant 0g / L solution, temperature 50°C, pH 8.0, treatment time 0.5 hour.

[0034] (3) Cutinase treatment: a solution of 2.0% owf of cutinase and 1 g / L of surfactant, the temperature is 60°C, the pH is 8.0, and the treatment time is 4 hours.

[0035] (4) Protease treatment: protease 1% owf, temperature 55°C, pH 8.5, treatment time 1 hour.

[0036] (5) Inactivate enzyme and wash with water.

[0037] Sample 1: treated with two baths of cutinase and protease;

[0038] Sample 2: After three steps of weak oxidation, cutinase pretreatment and protease treatment.

[0039] Aft...

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Abstract

The invention provides a wool-fabric protease anti-felting method based on weak oxidation and cutinase pretreatment, which belongs to the technical field of dyeing and finishing of wool fabric in the wool-spinning industry. The method aims to overcome the defects that the chlorination-process for wool-felting prevention seriously pollutes environment and the single protease-method treatment is poor in fabric wettability and high in felting rate in order to achieve the aim of optimizing the protease treatment effect of the wool fabric. All-wool grey fabric is extracted in a chloroform-methanol or carbon tetrachloride-methanol solution to remove free oily impurities, is pretreated with hydrogen peroxide and cutinase in turn to improve the hydrophilicity of the fiber surface, and then is subjected to reduction processing in a protease solution so as to realize biological processing combined with wool enzyme reduction. The method makes the prior chlorination-process felting prevention replaced with a biological-method wool-felting prevention process, and the method not only can effectively improve the reduction rate and anti-felting effect of the wool fabric, and promote the improvement of fabric wettability, but also can effectively increase the dyeing depth of fabric, and reduce fiber damage in reduction processing, and is favorable for protecting ecological environment.

Description

technical field [0001] The invention discloses a wool fabric protease anti-felting method based on weak oxidation and cutinase pretreatment, which belongs to the application technical field of wool fabric dyeing and finishing processing in the wool spinning industry. Background technique [0002] Wool has fluffing properties. When the wool fabric is subjected to external force in a humid and hot state, it will produce felting, shrinking the area, changing the shape, protruding fluff, reducing elasticity, rough hand feeling, and seriously affecting the appearance and wearing performance of the fabric. Therefore, it is necessary to carry out weight reduction and anti-felting finishing for the purpose of removing the scale layer on the woolen fabric. At present, the anti-felting effect of wool is better and the most widely used is the chlorination method, such as hypochlorite or dichloroisocyanurate (DCCA) for treatment. When the chlorination method is used to treat wool, the ...

Claims

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Application Information

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IPC IPC(8): D06M16/00C12S11/00D06M101/10
Inventor 王平范雪荣王强崔莉吴敬
Owner JIANGNAN UNIV
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