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Method for improving antibacterial property of wool by bio-enzymatic method

A bio-enzymatic and antibacterial technology, applied in the fields of biochemical fiber treatment, textile and papermaking, fiber treatment, etc., can solve the problem of inability to impart wool functions, and achieve the effect of safe and environmentally friendly treatment process, mild reaction conditions, and high catalytic efficiency.

Inactive Publication Date: 2009-10-28
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above studies also show that the enzymatic cross-linking modification of wool fiber itself by using MTG alone can only improve the physical and mechanical properties of wool, such as strength, anti-felting, anti-wrinkle, etc., and cannot endow wool with more functions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: The wool selected in this example is all-wool vanillin, and the pretreatment method selected is KMnO 4 For pretreatment, the selected finishing agent is ε-polylysine.

[0037] Take 2.0g wool fabric and pretreat it according to the following process: the wool fabric is dipped in hot water and oxidized with potassium permanganate solution (KMnO 4 4% owf, penetrant 0.5g / L, pH 4.0, temperature 40°C, time 30min, bath ratio 1:20), soaping (45°C, 15min), neutralization cleaning (soda ash 2% owf), rinse with water, Dry at 50℃, decolorize (NaHSO 3 6% owf, 1% HAc mass fraction, temperature 40°C, time 30min, bath ratio 1:20), washed with water and dried.

[0038] The wool fabric after the above pretreatment is treated as follows: the fabric is immersed in a buffer solution containing MTG and ε-polylysine (MTG: 20U / g fabric, ε-polylysine: 3% owf, penetrant 0.5% owf, temperature 45℃, time 2h, bath ratio 1:30, pH 8.0), washed with water and dried.

[0039] The following perfor...

Embodiment 2

[0042] Example 2: The wool selected in this example is full wool gabardine, the selected pretreatment method is DCCA pretreatment, and the selected finishing agent is α-polylysine.

[0043] Take 2.0g wool fabric for pretreatment according to the following process: cold water immersion, DCCA chlorination treatment (DCCA4%owf, penetrant 1g / L, pH 3.5, temperature 25℃, time 20min, bath ratio 1:20), 40℃ warm water Washing and flushing, dechlorination (NaHSO 3 6% owf, pH 4.0, temperature 40°C, time 20min, 1:20), washed with water, adjusted pH value (Tris-HCl pH 8, temperature 30°C, time 15min, bath ratio 1:25), washed and dried.

[0044] The wool fabric after the above pretreatment is treated as follows: the fabric is immersed in a buffer solution containing MTG and α-polylysine (MTG: 30U / g fabric, α-polylysine: 2% owf, penetrant 0.5% owf, temperature 50℃, time 1h, bath ratio 1:20, pH 7.5), washed with water and dried.

[0045] The following performance tests were carried out on the sam...

Embodiment 3

[0048] Example 3: The wool selected in this example is Merino wool top, and the selected pretreatment method is Na 2 SO 3 For pretreatment, the selected finishing agent is ε-polylysine.

[0049] Take 2.0g of wool tops and pretreat them according to the following process: Tops impregnated with reducing solution (Na 2 SO 3 3% owf, pH8.5, temperature 40°C, time 30min, bath ratio 1:20), washed with water and dried.

[0050] Then the pretreated tops are treated as follows: the tops are immersed in a buffer solution containing MTG and ε-polylysine (MTG: 25U / g fabric, ε-polylysine: 3% owf, penetrant 0.5 %Owf, temperature 40℃, time 4h, bath ratio 1:20, pH 8), washed with water and dried.

[0051] The following performance tests were carried out on the samples arranged according to the above process, and the results are shown in Table 3:

[0052] Table 3 Example 3 Antibacterial Finished Fabric Properties

[0053] Inhibitory golden yellow

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Abstract

The invention provides a method for improving antibacterial property of wool by a bio-enzymatic method, which belongs to the field of textile biotechnology. The method utilizes the catalysis of transglutaminase (MTG) to graft some natural compounds which contain primary amine groups and have antibacterial property onto wool to improve the antibacterial property of the wool. The method comprises the following process flows: wool pretreatment, treatment with an MTG-containing antibacterial finishing agent, washing and drying. Wool yarn or fabric treated by the method not only has improvement on the antibacterial property but also correspondingly has improvement on some other properties and particularly has great improvement in low-temperature dyeing property. Meanwhile, the method improves the strength of the wool yarn or the fabric, thereby playing a role in restoring strength. The strength-restoring function is an outstanding advantage of the method compared with other antibacterial finishing agents or antibacterial finishing processes. In addition, compared with chemical finishing, the treatment process of the method is free from pollution, healthier and friendlier to environment by adopting a bio-enzyme technique.

Description

Technical field [0001] The invention relates to a method for grafting some natural substances with antibacterial properties to wool by using the catalytic action of transglutaminase to impart antibacterial properties to the wool, and belongs to the technical field of textile biology. Background technique [0002] Wool fibers and related materials are mainly composed of keratin, which is a complex of sulfur-containing proteins. Although the presence of disulfide bonds, salt bonds and van der Waals forces between the molecules makes the hair fibers have a strong resistance to the hydrolysis of proteolytic enzymes, but under suitable temperature and humidity conditions, the sludge and human sweat will be mixed. It provides rich nutrition for the growth and reproduction of bacteria and molds, makes the fabrics easy to produce mildew degradation, and cause the spread of diseases, which largely restricts the application of wool fabrics as high-end clothing fabrics, so it is anti-bacter...

Claims

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Application Information

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IPC IPC(8): D06M15/507D06M15/03D06M15/15D06M16/00C12S11/00
Inventor 王强范雪荣金规标王平崔莉赵先飞孙仁斌陈望
Owner JIANGNAN UNIV
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