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Technique for preventing wool loomage from felting by two-bath process using cutinase/protease

A process method and protease technology are applied in the field of applying cutinase/protease in the field of two-bath wool fabric anti-felting process, which can solve the problems of large fiber damage and environmental pollution in anti-felting, and achieve low fiber damage, high quality, and high quality. The effect of reduced wetting time

Inactive Publication Date: 2009-05-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the present invention can improve the wettability of wool fabrics and the effect of enzymatic anti-felting, solve the technical problems of large damage to wool anti-felting fibers and serious environmental pollution in the chlorination method, achieve optimized treatment effects, improve the environment, and improve the quality of wool. The purpose of product quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Fabric Variety: All-wool gabardine.

[0020] (1) Extraction pretreatment: the wool fabric is placed in chloroform / methanol (87 / 13, v / v) organic solvent, 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.

[0021] (2) Cutinase treatment: cutinase 5.0% owf, surfactant 0g / L, temperature 60°C, pH 8.0, treatment time 4 hours. After cutinase treatment, extract again with the method mentioned in (1).

[0022] (3) Protease treatment: protease 2% owf, 55° C., pH 8.5, treatment time 1 hour.

[0023] Sample 1: only treated with protease;

[0024] Sample 2: treated with two baths of cutinase / protease.

[0025] After the above process, the reduction rate of sample 1 is 3.6%, the wetting time is >30min, and the felt shrinkage rate is 6.3%; the weight reduction rate of sample 2 is 7.5%, the wetting time is 1.2min, and the felt shrinkage rate was 3.3%.

[0026] The effect of cutinase / protease t...

Embodiment 2

[0028] Fabric type: all-wool women's clothing.

[0029] (1) Extraction pretreatment: the wool fabric is placed in carbon tetrachloride / methanol (87 / 13, v / v) organic solvent, refluxed and extracted at 55°C for 4 hours, and then washed with ethanol and hot water to remove the cloth surface Residual impurities.

[0030] (2) Cutinase treatment: cutinase 2.0% owf, surfactant 1g / L, temperature 60°C, pH 8.0, treatment time 4 hours. After cutinase treatment, extract again with the method mentioned in (1).

[0031] (3) hydrogen peroxide treatment: H 2 o 2 10g / L, surfactant 1g / L, temperature 50°C, pH 9.0, treatment time 1 hour.

[0032] (4) Protease treatment: protease 1% owf, 55°C, pH=8.5, treatment time 1 hour.

[0033] Sample 1: treated with cutinase / protease two baths;

[0034] Sample 2: after hydrogen peroxide / protease two-bath treatment

[0035] After the above process, the reduction rate of sample 1 is 4.7%, the wetting time is 5.5min, and the felt shrinkage rate is 5.7%;...

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Abstract

The invention discloses a method for performing an anti-felting process of a wool fabric by a two-bath process by applying cutinase / prolease, which belongs to the technical field of dye and finishing processing of wool fabric. The method aims to overcome the defects that the felt proofing by a wool chlorination method has serious environmental pollution and fabric treated by a single prolease method has poor wettability and high felting shrinkage and achieve the aim of optimizing the treatment effect of the prolease of the wool fabric. All wool grey cloth is extracted and removed with free oil impurities in a carbon tetrachloride / methanol solution first, is presoaked by hot water, then is treated in a cutinase solution, is removed with lipoid layer hydrolysates of scale surface layers through the extraction of carbon tetrachloride / methanol, and then is subjected to decrement processing in a prolease solution to realize the biological processing combined with enzymatic pretreatment and enzyme decrement of wool. Through the invention, a method combined with chemistry and the prolease is substituted by a wool shrinkproofing process by a complete biological method, which not only can effectively improve the decrement rate and the antifelting effect of the wool fabric, promote the improvement of the wettability of the fabric, but also can effectively improve the dyeing depth of the fabric, reduce the fiber damage in the decrement processing, and is also favorable for the protection of ecological environment.

Description

technical field [0001] The invention discloses a two-bath wool fabric anti-felting process method using cutinase / protease, which belongs to the application technical field of wool fabric dyeing and finishing 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 fibers tend to absorb chlorin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M16/00C12S11/00D06B9/00D06M101/12
Inventor 范雪荣王平王强崔莉吴敬
Owner JIANGNAN UNIV
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