A method for anti-felting finishing of wool fabrics using proteinase K

A protease and anti-felting technology, which is applied in the application field of wool fabric dyeing and finishing, can solve the problems of large internal loss of wool and weak degradation of keratin in surface scales, etc., and achieve the comprehensive effect of reducing the degree of felting after washing and preventing felting Good, good innovative effect

Active Publication Date: 2020-02-07
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the existing protease has a weak degradative effect on the keratin of the surface scales but a large loss inside the wool in the process of processing wool

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Fabric variety: pure wool gabardine fabric

[0035] (1) Pretreatment of fabric with urea peroxide: immerse the wool fabric in 90℃ hot water for 1 hour, and then place it in a solution containing 30mL / L of urea peroxide, 1.5g / L of sodium pyrophosphate, and 1g / L of penetrant JFC. Ratio 35:1, temperature 50℃, pH 8, treatment time 1h. After finishing, rinse repeatedly with water and dry at 50℃.

[0036] (2) Proteinase K treated fabric: First immerse the pretreated wool fabric in 90℃ hot water containing 1g / L chitooligosaccharide and 20g / L urea for 1h, and then put it in 16U / g Fabric Proteinase K solution (enzyme temperature 50℃, pH 8, bath ratio 25:1, add 1mmol / L Ca 2+ ) The immersion treatment is 6h.

[0037] (3) The enzyme is inactivated at 80°C for 10 minutes. After finishing, wash with hot water at 90°C and cold water at room temperature twice, and dry at 50°C.

[0038] After the above process, the felt shrinkage rate of the wool fabric is 5.02%, the weight reduction rate i...

Embodiment 2

[0041] Fabric variety: Van Liding fabric

[0042] (1) Pretreatment of fabric with urea peroxide: immerse the wool fabric in hot water at 90°C for 1 hour, and then place it in a solution containing 30mL / L of carbamide peroxide, 1.5g / L of sodium pyrophosphate, and 1g / L of penetrant JFC. The bath ratio is 35:1, the temperature is 50℃, the pH is 8, and the treatment time is 1h. After the end, rinse repeatedly with deionized water and dry at 50°C.

[0043] (2) Proteinase K treated fabric: immerse the pretreated wool fabric in 90℃ hot water containing 1g / L chitooligosaccharide and 20g / L urea for 1h, and put it in 4U / g Fabric Proteinase K solution (enzyme temperature 50℃, pH 8, bath ratio 25:1, add 1mmol / LCa 2+ ) Soaking in 4h.

[0044] (3) The enzyme is inactivated at 80°C for 10 minutes. After finishing, wash with hot water at 90°C and cold water at room temperature twice, and dry at 50°C.

[0045] After the above process, the felt shrinkage rate of the wool fabric is 5.96%, the weight...

Embodiment 3

[0049] Fabric variety: Van Liding fabric

[0050] (1) Pretreatment of fabric with urea peroxide: soak the wool fabric in hot water at 90°C for 1 hour, and then place it in a solution containing 10 mL / L of urea peroxide, 2 g / L of sodium pyrophosphate, and 2 g / L of penetrant JFC. The ratio is 50:1, the temperature is 70℃, the pH is 6, and the treatment time is 2h. After the end, rinse repeatedly with deionized water and dry at 50°C.

[0051] (2) Proteinase K treated fabric: immerse the pretreated wool fabric in 90℃ hot water containing 2g / L chitooligosaccharide and 40g / L urea for 1h, and put it in 25U / g Fabric Proteinase K solution (enzyme temperature 65℃, pH 10, bath ratio 20:1, add 2mmol / LCa 2+ ) Soaking in 4h.

[0052] (3) The enzyme is inactivated at 80°C for 10 minutes. After finishing, wash with hot water at 90°C and cold water at room temperature twice, and dry at 50°C.

[0053] After the above process, the felt shrinkage rate of the wool fabric is 4.92%, the weight reduction...

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Abstract

The invention discloses a method for performing anti-felting finishing on wool fabrics by using proteinase K, and belongs to the application technical field of wool fabric dyeing and finishing processing in the wool spinning industry. The aim is to solve the problem that ordinary protease anti-felting treatment has greater damage to wool strength and less effect on the degradation of keratin in the scale layer, so as to achieve the purpose of optimizing wool fabric protease anti-felting treatment. The preferred process is as follows: the pure wool fabric is pretreated with carbamide peroxide first, and the CMC is blocked with chitosan oligosaccharide, and then the wool fabric is treated with proteinase K. The wool fabric treated by the method has obviously improved anti-felting performance and reduced fabric strength damage. The present invention introduces protease K into wool anti-felting finishing for the first time, and through the effective degradation of wool scale keratin by protease K, better wool anti-felting effect is achieved, which can replace traditional chlorination anti-felting treatment.

Description

Technical field [0001] The invention relates to a method for anti-felting and finishing wool fabrics by using proteinase K, and belongs to the technical field of dyeing and finishing of wool fabrics in the wool spinning industry. Background technique [0002] Wool has a full hand feel, strong moisture absorption capacity, is not easy to stain and has excellent warmth retention. It is a popular high-end textile fabric. However, the special scaly structure on the surface of the wool fiber makes the wool has a unique milling property, which is prone to felting when washed with water. In addition, the good elasticity and crimp of wool also promote the generation of felt shrinkage and affect its practicality. [0003] At present, the chlorination process is very common in the anti-felting treatment of wool. This method has a good anti-felting effect and the wetting performance of the fabric is also improved, but it has great damage to the wool and the fabric is easy to yellow after tre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/432D06M16/00D06M11/68D06M15/03D06M101/12
CPCD06M13/432D06M16/003D06M11/68D06M15/03D06M2101/12D06M2200/45C12Y304/21064D06M11/72
Inventor 王强李文佳余圆圆袁久刚王平范雪荣
Owner JIANGNAN UNIV
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