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Cutinase, keratinase and protease one-bath process anti-felting technology

The technology of keratinase and cutinase is applied in the application field of dyeing and finishing of wool fabrics, which can solve the problems of environmental pollution and large fiber damage, and achieve the effects of shortened wetting time, low fiber damage and improved dyeing performance.

Inactive Publication Date: 2013-03-13
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can improve the wettability of wool and the effect of biological enzyme anti-felting finishing, solve the technical problems of large fiber damage and serious environmental pollution in the traditional chlorination wool anti-felting finishing, achieve optimized treatment effect, improve the environment, The purpose of improving the quality of wool products; at the same time, because the present invention adopts the one-bath method synergistic treatment of three enzymes of cutinase, keratinase and protease, it can significantly improve the action efficiency of keratinase and protease in the treatment bath; the present invention can also significantly Save processing time and increase productivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Sample species: full wool gabardine.

[0025] (1) Extraction pretreatment: the wool fabric is placed in an organic solvent of chloroform:methanol (87:13, v / v), refluxed and extracted at 55°C for 4 hours, and then washed with ethanol and hot water to remove the residue on the cloth surface Impurities.

[0026] (2) Hydrogen peroxide oxidation treatment: 30% hydrogen peroxide 20g / L, surfactant 0g / L, temperature 50°C, pH 8.0, treatment time 0.5 hours.

[0027] (3) One-bath treatment of cutinase, keratinase and protease: cutinase 5.0% owf, cutinase 5.0% owf, protease 2% owf, penetrant 2g / L, temperature 60°C, pH 8.0, bath ratio 1 : 30, the processing time is 2 hours.

[0028] (4) Protease treatment: protease 2% owf, 55° C., pH 8.5, treatment time 2 hours.

[0029] Sample 1: only after oxidation and protease treatment (steps 1, 2 and 4);

[0030] Sample 2: Extraction pretreatment first, and then one-bath treatment with cutinase, keratinase and protease (steps 1 and 3).

...

Embodiment 2

[0033] Sample species: wool strips.

[0034] (1) Extraction pretreatment: Place wool strips in chloroform:methanol (87:13, v / v) organic solvent, reflux extraction at 55°C for 4 hours, and then wash with ethanol and hot water to remove residual impurities on the cloth surface.

[0035] (2) Cutinase treatment: cutinase 2.0% owf, surfactant 1g / L, temperature 60°C, pH 8.0, treatment time 4 hours.

[0036] (3) Keratinase treatment: keratinase 5.0% owf, penetrant 0g / L, temperature 55°C, pH 8.5, time 8 hours.

[0037] (4) Protease treatment: protease 1% owf, 55° C., pH 8.5, treatment time 1 hour.

[0038] (5) One-bath treatment of cutinase, keratinase and protease: cutinase 3.0% owf, cutinase 5.0% owf, protease 1% owf, penetrant 2g / L, temperature 55°C, pH 8.0, bath ratio 1:30, treatment time 1.5 hours.

[0039] Sample 1: three-step treatment with cutinase, keratinase and protease (steps 1, 2, 3 and 4);

[0040] Sample 2: One-bath treatment with cutinase, keratinase and protease (...

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Abstract

The invention discloses a wool biological process anti-felting finishing method based on a cutinase, keratinase and protease one-bath process, belonging to the technical field of wool fabric dyeing and finishing, which aims to solve the shortcomings that a wool chlorination anti-felting method causes serious environmental pollution, a single protease method has poor wettability and high felting rate in treating fabric and a cutinase, keratinase and protease three-step method has low treatment efficiency to realize an effect of optimizing wool fabric protease treatment. The method comprises the following steps of: extracting a wool sample to remove free oily impurities; and performing one-bath process treatment in a solution containing cutinase, keratinase and protease of certain concentration, wherein through the synergistic effect of the three enzymes, the hydrophilicity of the fiber scale surface and the acting efficiency of the keratinase and protease in the treatment bath, the removal effect of a scale layer on the wool surface and the anti-felting performance of the wool fabric are improved, and the treatment time is shortened. According to the invention, the biological process anti-felting method can replace the traditional chlorination method, the quality of the wool anti-felting finishing is improved, and protection on ecological environment is facilitated.

Description

technical field [0001] The invention discloses a wool biological anti-felting finishing method based on the one-bath treatment of cutinase, keratinase and protease, which belongs to the application technical field of wool fabric dyeing and finishing in the wool textile industry. Background technique [0002] Wool has fluffing properties. Wool fabrics will shrink when subjected to external forces in a humid and hot state, which will cause the area of ​​the fabric to shrink, the shape will change, the fluff will protrude, the elasticity will decrease, the hand will be rough, and the appearance and wearing performance of the fabric will be seriously affected. Therefore, it is necessary to perform anti-felting finishing on wool fabrics. The methods of anti-felting finishing of wool fabrics mainly include weight reduction anti-felting finishing for the main purpose of removing scales and additive anti-felting finishing of coating polyurethane or silicone polymer resin on the wool...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M16/00D06M101/12
Inventor 范雪荣王强王平崔莉袁久刚吴敬
Owner JIANGNAN UNIV
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