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Method for improving wool fire-retardancy with biological enzyme

A bio-enzymatic and flame-retardant technology, which is applied in animal fiber, biochemical fiber treatment, textiles and papermaking, etc., can solve problems such as the inability to endow wool with functions, and achieve improved flame-retardant performance, mild reaction conditions, and high catalytic efficiency. Effect

Inactive Publication Date: 2009-08-19
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 MTG can only improve a few properties such as strength, anti-felting, and anti-wrinkle, but cannot endow wool with more functions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: The wool selected in this example is all-wool veritin, and the selected pretreatment method is KMnO 4 For pretreatment, the selected finishing agent is sodium alendronate.

[0030]Get 2.5g woolen fabric and carry out pretreatment according to following process: woolen fabric is soaked in hot water, potassium permanganate solution oxidation (KMnO 4 3% (owf), penetrant 0.5g / L, temperature 40°C, time 30min, bath ratio 1:20), soaping (45°C, 15min), neutralization cleaning (soda ash 2% (owf)), water rinse , dried at 50°C, decolorized (NaHSO 3 4% (owf), HAc volume fraction 1%, temperature 40°C, time 30min, bath ratio 1:20), washing and drying.

[0031] Then the above-mentioned pretreated wool fabric is processed as follows: the fabric is immersed in a buffer solution containing MTG and alendronate (MTG: 20U / g fabric, alendronate: 5% (owf), penetrant 0.5% (owf), temperature 40°C, time 2h, liquor ratio 1:20, pH7.0), washing and drying.

[0032] The samples a...

Embodiment 2

[0034] Example 2: The wool selected in this example is all-wool gabardine, the selected pretreatment method is DCCA pretreatment, and the selected finishing agent is sodium pamidronate.

[0035] Take 2.5g of wool fabric and carry out pretreatment according to the following process: soaking in cold water, DCCA chlorination treatment (DCCA4% (owf), penetrant 1g / L, pH3.5, temperature 25°C, time 20min, liquor ratio 1:20), Wash with warm water at 40°C, dechlorinate (NaHSO 3 6% (owf), pH4.0, temperature 40°C, time 20min, 1:20), washing with water, adjust the pH value (Tris-HCl pH8, temperature 30°C, time 15min, bath ratio 1:25), water washing and drying Dry.

[0036] The above-mentioned pretreated wool fabric is processed as follows: the fabric is immersed in a buffer solution containing MTG and sodium pamidronate (MTG: 30U / g fabric, sodium pamidronate: 4% (owf), penetrant 0.5% (owf), temperature 37°C, time 2.5h, liquor ratio 1:20, pH7.5), washing and drying.

[0037] The sample...

Embodiment 3

[0039] Example 3: The wool selected in this example is Merino Australian wool tops, and the selected pretreatment method is Na 2 SO 3 For pretreatment, the selected finishing agent is phosphoethanolamine.

[0040] Get 2.5g wool tops and carry out pretreatment according to the following process: wool tops are soaked in reducing solution (Na 2 SO 3 3% (owf)), pH8.5, temperature 40°C, time 30min, bath ratio 1:20), washed with water and dried.

[0041] The above-mentioned pretreated tops are processed as follows: the tops are immersed in a buffer solution containing MTG and phosphoethanolamine (MTG: 25U / g fabric, phosphoethanolamine: 3% (owf), penetrant 0.5% (owf), temperature 45°C, time 1.5h, bath ratio 1:20, pH8), wash with water and dry.

[0042] The samples arranged according to the above process were tested for the following properties, as shown in the following table:

[0043] Limiting Oxygen Index (%) Breaking strength (N) Dyeing K / S value blank sa...

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Abstract

A method for improving flame retardance of wool by bioenzyme treatment is disclosed, belonging to the field of textile biotechnology. The invention utilizes a catalytic action of transglutaminase (MTG) to graft a type of compounds containing primary amino groups and a large number of phosphorus elements onto the wool so as to improve the flame retardance of the wool, the technological procedures comprise: pretreatment, treatment with a phosphoric finishing agent containing the MTG, water rinsing and drying. Wool yarns and fabrics treated by the inventive technology can not only be improved in the flame retardance, but also be enhanced in some other performances to a certain extent, in particularly the strength of the wool yarns and the fabrics is enhanced to play a role of powerful repair, which is outstandingly superior to other flame-retardant finishing agents or flame-retardant finishing technologies. In addition, in contrast to chemical finishing, the invention is healthier and more environmentally-friendly due to the employment of bioenzyme technique and the pollution-free treatment technology.

Description

technical field [0001] The invention relates to a method for grafting some flame-retardant chemical substances onto wool by using the catalysis of transglutaminase to improve the flame-resistance of wool, which belongs to the field of textile biotechnology. Background technique [0002] Wool belongs to the fibrous protein of keratin, contains more cysteine, cystine, methionine, etc., and is a cross-linked polypeptide with a folded molecular structure. Because wool has high nitrogen content and is easy to absorb moisture, it has high ignition temperature, low heat of combustion and low flame temperature, so it shows high flame retardancy. However, due to the addition of some additives to the made wool fabric, the flame retardant performance is reduced, which makes the wool fiber easy to burn, which greatly limits the safety and practicality of wool. Therefore, it is very realistic to carry out flame retardant treatment to reduce its flammability. significance. [0003] At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/453D06M16/00C12S11/00D06M101/10
Inventor 王强范雪荣汤克明孙仁斌陈望王平崔莉
Owner JIANGNAN UNIV
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