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Method for anti-felting of wool fabric by two-bath method using imidazolium chloride salt ionic liquid/protease

An ionic liquid, imidazole chloride technology, applied in animal fiber, biochemical fiber treatment, textile and papermaking, etc., can solve problems such as pollution and fabric yellowing, and achieve the effect of improving quality and reducing fabric felt shrinkage.

Inactive Publication Date: 2012-02-22
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at improving the anti-felting effect of wool protease. The present invention uses imidazolium chloride salt ionic liquid / protease to carry out the two-bath method to improve the anti-felting effect of protease on wool fabrics. The present invention no longer uses dichloroiso Cyanurate (DCCA), which solves the problem of fabric yellowing caused by pretreatment with chlorine-containing substances such as DCCA and environmental pollution caused by adsorbable halides, and achieves the purpose of improving the quality of wool fabrics

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

[0020] Fabric type: all-wool women's clothing

[0021] 1. Extraction pretreatment of wool fabric: 87:13 (v / v) chloroform / methanol was used as solvent, the wool fabric was subjected to reflux extraction at 55°C for 3h, then washed with warm water and dried at 50°C.

[0022] 2. Ionic liquid treatment: the ionic liquid is 1-allyl-3-methylimidazolium chloride ([Amim]Cl), the treatment temperature is 60°C, the bath ratio is 1:100 (w / v), and the treatment time is 60min After the treatment, the attached ionic liquid is rolled off, and the rolled ionic liquid can be directly reused. The treated fabric is washed with ethanol, and finally the fabric is washed with water and dried at 50 °C; the used ethanol is recovered for ionic liquid deal with.

[0023] 3. Protease treatment: The fabric treated with ionic liquid is then soaked with acid protease, the dosage of protease is 4% o w f, the treatment temperature is 40°C, pH 3.5, and the treatment time is 1h.

[0024] Sample 1: only treat...

Embodiment 2

[0029] Fabric type: all-wool women's clothing

[0030] 1. Extraction pretreatment of wool fabric: 87:13 (v / v) chloroform / methanol was used as solvent, the wool fabric was subjected to reflux extraction at 55°C for 3h, then washed with warm water and dried at 50°C.

[0031] 2. Ionic liquid treatment: the ionic liquid is 1-butyl-3-methylimidazolium chloride ([Bmim]Cl), the treatment temperature is 110°C, the bath ratio is 1:50 (w / v), and the treatment time is 10min. After the treatment, the attached ionic liquid is rolled off, and the rolled-off ionic liquid can be directly reused. The treated fabric is washed with ethanol, and finally the fabric is washed with water and dried at 50°C; the used ethanol is recycled for ionic liquid .

[0032] 3. Protease treatment: impregnate the fabric treated with ionic liquid with alkaline protease, protease dosage: 2% o w f, treatment temperature 55°C, pH 8.5, treatment time 0.5h.

[0033] Sample 1: only treated with protease

[0034] Samp...

Embodiment 3

[0038] Fabric Type: Full Wool Gabardine

[0039] 1. Extraction pretreatment of wool fabric: 87:13 (v / v) chloroform / methanol was used as solvent, the wool fabric was subjected to reflux extraction at 55°C for 3h, then washed with warm water and dried at 50°C.

[0040]2. Ionic liquid treatment: the ionic liquid is 1-ethyl-3-methylimidazolium chloride ([Emim]Cl), the treatment temperature is 150°C, the bath ratio is 1:10 (w / v), and the treatment time is 5min. After the treatment, the attached ionic liquid is rolled off, and the rolled-off ionic liquid can be directly reused. The treated fabric is washed with ethanol, and finally the fabric is washed with water and dried at 50°C; the used ethanol is recycled for ionic liquid .

[0041] 3. Protease treatment: The fabric treated with the ionic liquid is soaked with neutral protease, the dosage of protease is 1% o w f, the treatment temperature is 50°C, pH 7, and the treatment time is 1.5h.

[0042] Sample 1: only treated with prot...

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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Abstract

The invention discloses a method for anti-felting of wool fabrics in a two-bath method by using imidazolium chloride ionic liquid / protease, and belongs to the application technical field of wool fabric dyeing and finishing processing in the wool textile industry. The method of the present invention first extracts the impurities on the surface of the fabric by chloroform / methanol, then modifies the surface layer of wool scales through the strong dissolving / swelling ability of imidazolium chloride salt ionic liquid, and then uses protease to finish and process the fabric to achieve The purpose of improving the anti-felting effect of protease-treated wool fabrics. In addition, the ionic liquid used in the pretreatment can be reused after vacuum distillation, so the pollution to the environment can be reduced. The invention aims to solve the problems that the existing single protease anti-felting treatment has poor effect and the DCCA / protease anti-felting process has serious pollution.

Description

technical field [0001] The invention relates to a method for anti-felting of wool fabrics by a two-bath method using imidazolium chloride ionic liquid / protease, and belongs to the application technical field of wool fabric dyeing and finishing processing in the wool textile industry. Background technique [0002] Among textiles, woolen fabrics have always been loved by people for their plump hand feeling, good warmth retention, strong hygroscopicity, and noble style. However, wool has shrinkage, and wool fabrics will shrink when subjected to external forces in a humid and hot state, resulting in shrinkage of the area, change of shape, prominent fluff, reduced elasticity, rough hand feeling, and serious impact on the appearance and wearability of the fabric. Therefore, it is necessary to perform anti-felting finishing on wool fabrics. The existence of the scale layer of wool is the root cause of the fleece property of wool. [0003] The research on wool anti-felting finishi...

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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Patent Type & Authority Patents(China)
IPC IPC(8): D06M16/00D06M13/352C12S11/00D06M101/12
Inventor 王强袁久刚范雪荣王平崔丽王树根
Owner JIANGNAN UNIV
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