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A method for improving the biofinishing effect of cellulase on sulfur dyed fabrics

A technology of cellulase and biological finishing, which is applied in fiber treatment, biochemical fiber treatment, textiles and papermaking, etc. It can solve the problems of low hairiness removal rate on the surface of fabrics and large amount of cellulase, and achieve the goal of simple method and avoiding waste Effect

Active Publication Date: 2017-03-01
石家庄美施达生物化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the existing sulfur dyed fabrics have inhibitory effect on cellulase, when the cellulase is treated, the amount of cellulase is large, and the removal rate of hairiness on the surface of the fabric after treatment is low, and a method for improving the effect of cellulase on vulcanization is provided. Method for biological finishing effect of dye dyed fabric

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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  • A method for improving the biofinishing effect of cellulase on sulfur dyed fabrics
  • A method for improving the biofinishing effect of cellulase on sulfur dyed fabrics
  • A method for improving the biofinishing effect of cellulase on sulfur dyed fabrics

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] According to the central compound experiment plan listed in Table 1, according to the test method of cellulose filter paper enzyme activity, test the absorbance of the cellulase L4 test solution under various conditions, so as to calculate the enzyme activity of cellulase. Use Minitab software to analyze the filter paper enzyme L4 activity of the cellulase in Table 2, and obtain the equivalent curve of the enzyme activity, and further analyze the highest activity value and activity greater than 5×10 6 Temperature and pH range at U / g

[0036] The center composite experiment design scheme in the embodiment 1 of table 1

[0037] serial number 1 2 3 4 5 6 7 8 9 10 11 12 13 temperature / ℃ 60 40 50 50 60 50 50 40 50 50 50 40 60 pH 5.5 4.5 5.0 5.5 4.5 5.0 4.5 5.0 5.0 5.0 5.0 5.5 5.0

[0038] In table 2 embodiment 1, cellulase activity compares (10 6 U / g)

[0039]

[0040] A is cellulase solution without sodium...

Embodiment 2

[0047] Add 150mL of distilled water into the dyeing cup, add the required sodium thiosulfate according to the dosage and process parameters listed in Table 5, and set the weight to 400g. Add 20g of knitted weft-knitted fabric dyed with sulfur black, treat it at room temperature for 5 minutes, then add the required cellulase L4, adjust the pH value with acetic acid and sodium acetate solution, raise the temperature to the required temperature, and continue the treatment for a certain period of time. After finishing, take out the cloth sample, wash it once with clean water, and test the hairiness removal rate of the fabric after drying.

[0048] Process conditions and biological treatment effect (fluff removal rate %) of table 5 fabric treatment

[0049]

[0050] As can be seen from Table 5, under the same experimental conditions, the same method was used to carry out cellulase biopolishing treatment on vulcanized dyed fabrics, adding sodium thiosulfate pretreated dyed fabric...

Embodiment 3

[0054] Add 150mL of distilled water into the dyeing cup, add the required amount of sodium thiosulfate according to the dosage and process parameters listed in Table 6, and set the weight to 400g. Add 20g of knitted weft-knitted fabric dyed with sulfur black, treat it at room temperature for 3 minutes, then add the required amount of cellulase L1, L2, L3, adjust to the required pH value, raise the temperature to the required temperature, and continue the treatment After a certain period of time, take out the cloth sample, wash it with clean water for 3 times, and test the hairiness removal rate of the fabric after drying.

[0055] Process conditions and biological treatment effect (fluff removal rate %) of table 6 fabric treatment

[0056]

[0057] L1, L2, L3 are three different types of cellulase, among which L3 is neutral cellulase. It can be seen from Table 6 that the use of sodium thiosulfate pretreatment can significantly improve the fluff removal rate of the fabric, ...

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 belongs to the technical field of textile finishing, and particularly relates to a treatment method for improving the biological finishing effect of a sulfur dye dyed textile by cellulase. The treatment method comprises the following steps: firstly, pretreating a textile for 3-5min by using a sodium thiosulfate solution accounting for 0.1-5 percent of the weight of the textile under a room temperature condition and a bath ratio of 1 to (8-20); after the textile is pretreated, directly adding cellulase accounting for 0.1-2 percent of the weight of the textile into the pretreatment liquid, regulating the pH value of the pretreatment liquid to be 4.0-6.5, raising the temperature to 30-60 DEG C, and performing biological treatment for 15-120min; and after the biological treatment is finished, adding sodium carbonate accounting for 3 percent of the weight of the textile, performing cellulase inactivation treatment for 10min, and then discharging residual liquor and washing with clear water once. According to the treatment method disclosed by the invention, the inhibition of the dyed textile on the cellulase is reduced, the acting effect of the cellulose is improved, and the practicability is strong.

Description

technical field [0001] The invention belongs to the technical field of textile finishing, and in particular relates to a method for improving the biological finishing effect of cellulase on sulfur dyed fabrics. Background technique [0002] Sulfur dyes are one of the commonly used dyes for dyeing cellulose fiber fabrics. The cellulose fiber fabric dyed with sulfur dyes has a lot of hairiness on the surface, which is easy to pilling in the later wearing process, which affects the appearance, quality and wearing comfort of clothing. In recent years, the cellulase bio-finishing process, also known as bio-polishing, is usually used to remove the hairiness on the surface of the fabric, thereby reducing the phenomenon of pilling. [0003] The cellulase finishing process is to hydrolyze the β-1,4 glucosidic bonds in the cellulose fibers through the action of cellulase, and remove the fine fibers protruding from the surface of the yarn under the action of external forces such as me...

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): D06M11/55D06M16/00
Inventor 姚继明魏赛男
Owner 石家庄美施达生物化工有限公司
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