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Method for degumming jute by using complex enzyme

A technology of compound enzyme and compound enzyme water, which is applied in the chemical post-treatment of fibers, textiles and papermaking, fiber treatment, etc., can solve the problems of unsatisfactory mechanical and physical properties of jute fiber strength, elongation at break, etc., and achieve improvement Spinnability, damage reduction, and direct contact effects

Active Publication Date: 2008-02-27
JIANGSU REDBUD DYEING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the method disclosed in above-mentioned patent document is not ideal enough to the removal of lignin impurities in jute fiber, and removal rate is only about 76%, and the content of lignin in the jute fiber of gained is still higher, and the intensity of the jute fiber obtained The mechanical and physical properties such as elongation at break are not ideal, so it needs to be blended or interwoven with other fibers such as cotton and chemical fibers, and the quality of the prepared clothing fabrics needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Unpack the jute purchased from the market and divide it into small handfuls of about 0.5 kg; and perform pretreatment in a water bath, the temperature of the water bath is 65°C, and the holding time is 2 hours;

[0022] Pectinase and laccase are formulated into compound enzyme by weight ratio 3: 7, get the compound enzyme prepared by weight ratio 0.5: 100 with jute, and dilute with water to 12 times of jute weight, use the compound enzyme after dilution The aqueous solution impregnates the jute;

[0023] Use acetic acid and baking soda to adjust the pH value of the diluted solution to 5.3, raise the temperature to 35°C, and keep it for 20 minutes; then use baking soda to adjust the pH value of the solution to 7.5, raise the temperature to 65°C, and keep it for 20 minutes;

[0024] Then jute is taken out from solution and piled up to carry out synergistic stacking process, and the time of synergistic stacking process is 24 hours;

[0025] The jute after the synergistic ...

Embodiment 2

[0028] The jute bought by the market is unpacked and divided into small handfuls of about 0.5 kilograms; and acid bath and water bath pretreatment are carried out, the acid used is the concentrated sulfuric acid with a concentration of more than 90%, and the temperature of the water bath is 30°C. The holding time is 1 hour;

[0029] Pectinase and laccase are formulated into compound enzyme by weight ratio 9: 1, get the compound enzyme prepared by weight ratio 5: 100 with jute, and dilute with water to 40 times of jute weight, use the compound enzyme after dilution The aqueous solution impregnates the jute;

[0030] Use acetic acid and baking soda to adjust the pH value of the diluted solution to 5.0, raise the temperature to 54°C, and keep it for 120 minutes; then use baking soda to adjust the pH value of the solution to 9.5, raise the temperature to 55°C, and keep it for 40 minutes;

[0031] Then jute is taken out from solution and piled up to carry out synergistic stacking ...

Embodiment 3

[0035] The jute purchased from the market is unpacked and divided into small handfuls of about 0.5 kilograms; and the jute is carried out to an acid bath pretreatment, and the used acid is acetic acid with a concentration of more than 90%.

[0036] Pectinase and laccase are formulated into compound enzyme by weight ratio 1: 1, get the compound enzyme prepared by weight ratio 1: 100 with jute, and dilute with water to 20 times of jute weight, use the compound enzyme after dilution The aqueous solution impregnates the jute;

[0037] Use acetic acid and baking soda to adjust the pH value of the diluted solution to 5.5, raise the temperature to 45°C, and keep it for 40 minutes; then use baking soda to adjust the pH value of the solution to 8.5, raise the temperature to 50°C, and keep it for 50 minutes;

[0038] Then jute is taken out from solution and piled up to carry out synergistic stacking process, and the time of synergistic stacking process is 10 hours;

[0039] The jute af...

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Abstract

The present invention relates to a method for degumming jute by using composite enzyme. The described composite enzyme includes pectase and laccase, and said method includes the following steps: impregnating jute with composite enzyme aqueous solution prepared by using pectase and laccase, the height ratio of the described composite enzyme aqueous solution and jute is 12:1-40:1, regulating pH value of the described composite enzyme aqueous solution to make it be greater than 5.5 and less than or equal to 6.5, heating to 35deg.C-65deg.C, retaining for 20-120min, then regulating pH value of said solution to 7.5-9.5, retaining for 20-120min at 40deg.C-70deg.C, finally making the jute after which is treated by composite enzyme undergo the process of enzyme deactivation treatment.

Description

technical field [0001] The invention relates to a method for degumming jute, in particular to a method for degumming jute using compound enzymes. Background technique [0002] Because hemp fiber has good moisture absorption and air permeability, low static electricity and good antibacterial properties, hemp textile and clothing fabrics are more and more popular. The fabrics of existing hemp textiles and clothing mainly refer to flax, ramie raw materials or blending / interweaving of such raw materials with other fibers such as cotton, wool, chemical fiber, silk, etc. Make hemp textiles not be able to be more widely used. And jute is the world's second largest cellulose fiber after cotton, its price is low, and compared with flax and ramie, it has better hygroscopicity and drapability, and its antibacterial ability is second only to hemp, so it has huge application value and develop potential. However, due to the high lignin content in jute, which is several times higher tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/00D06M16/00
Inventor 刘国忠张振华
Owner JIANGSU REDBUD DYEING TECH CO LTD
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