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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, easy removal, effect of weakening joint force

Active Publication Date: 2008-03-05
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

[0020] 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;

[0021] 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;

[0022] Use acetic acid and baking soda to adjust the pH value of the diluted solution to 5.5, raise the temperature to 55°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 40°C, and keep it for 20 minutes;

[0023] 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;

[0024] The jute after the synergistic ...

Embodiment 2

[0027] 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;

[0028] 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;

[0029] Use acetic acid and baking soda to adjust the pH value of the diluted solution to 5.0, raise the temperature to 60°C, and keep it for 120 minutes;

[0030] Then use baking soda to adjust the pH of the solution to 7.5, 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 stack...

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 5.0, raise the temperature to 55°C, and keep it for 40 minutes;

[0038] Then use sodium bicarbonate to adjust the pH value of the solution to 8.0, raise the temperature to 50° C., and keep it for 50 minutes;

[0039] Then jute is taken out from solution and piled up and carries out synergistic stacking process, and the time of synergistic stacking process is 10 hours;...

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PUM

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Abstract

The process of degumming jute with composite enzyme comprising pectase and laccase includes the following steps: dipping jute in composite enzyme aqua compounded with pectase and laccase in 12-40 times weight of jute; regulating the pH value of composite enzyme aqua to 5.0-5.5, heating to 55-60 deg.c and maintaining for 20-120 min; regulating the pH value of composite enzyme aqua to 7.5-8.0 and maintaining at 40-59 deg.c for 50-120 min; and deactivating enzyme of treated jute. The process is simple and has high lignin eliminating effect.

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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