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A kind of preparation method of corn bran fiber and corn bran fiber obtained by the method

A corn husk and fiber technology, which is applied in the chemical post-treatment of fibers, fiber treatment, textiles and papermaking, etc., can solve the problems of unsatisfactory fiber degumming rate, breaking strength and fineness, and achieve good dispersion, high strength, The effect of lateral connection elimination

Inactive Publication Date: 2015-12-30
青岛晟任现代农业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the degumming of corn husk fiber is generally carried out by alkali degumming, and some people have begun to try to explore biological enzyme degumming. Chinese patent application 201210258345.8 adopts a combined chemical and biological degumming method, but the degumming rate, breaking strength and fineness of the fiber are not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Screen the corn husks without mildew, soak them in water overnight, and then perform ultrasonic treatment in an aqueous solution with a bath ratio of 1:15 for 10 minutes, and the ultrasonic frequency is 20KHz; pretreat the corn husk fibers by soaking in hydrogen peroxide, the concentration of hydrogen peroxide is 30% hydrogen peroxide 15g / L, sodium borohydride 0.2g / L, sodium pyrophosphate 1g / L, heated to a temperature of 45°C at a heating rate of 1°C per minute, and the treatment time was 30min; degumming the corn bran with biological enzymes: using Xylanase, cellulase and pectinase, the weight ratio of the three is 2.5:1:3.2, the total concentration is 2g / L, soaked at room temperature for 5 days, after the degumming process is completed, the corn bran fiber is heated to 80 ℃ Soak in water for 10 minutes, then rinse repeatedly for 3-5 times; use chemical methods to further degumming the corn bran: using 2g / L sodium hydroxide, 1.2g / L sodium pyrophosphate and 1g / L urea, b...

Embodiment 2

[0030] Screen the corn husks without mildew, soak them in water overnight, and then conduct ultrasonic treatment for 15 minutes in an aqueous solution with a bath ratio of 1:15, and the ultrasonic frequency is 25KHz; pretreat the corn husk fibers by soaking in hydrogen peroxide, the concentration of hydrogen peroxide is 30% hydrogen peroxide 15g / L, sodium borohydride 0.4g / L, sodium pyrophosphate 2g / L, heated to a temperature of 45°C at a heating rate of 1°C per minute, and the treatment time was 30min; degumming the corn bran with biological enzymes: using Xylanase, cellulase and pectinase, the weight ratio of the three is 2.5:1:3.2, the total concentration is 2g / L, soaked at room temperature for 5 days, after the degumming process is completed, wash with high temperature water to inactivate the enzyme; Methods The corn husks were further degummed: 2g / L sodium hydroxide, 1.2g / L sodium pyrophosphate and 1g / L urea were used, the bath ratio was 1:10, and the heating rate was 1°C ...

Embodiment 3

[0033] Screen the corn husks without mildew, soak them in water overnight, and then perform ultrasonic treatment in an aqueous solution with a bath ratio of 1:20 for 10 minutes, with an ultrasonic frequency of 25KHz; soak the corn husk fibers in hydrogen peroxide for pretreatment, and the hydrogen peroxide concentration is 30% hydrogen peroxide 15g / L, sodium borohydride 0.2g / L, sodium pyrophosphate 1g / L, heated to a temperature of 45°C at a heating rate of 1°C per minute, and the treatment time was 30min; degumming the corn bran with biological enzymes: using Xylanase, cellulase and pectinase, the weight ratio of the three is 2.5:1:3.2, the total concentration is 3g / L, soaked at room temperature for 3 days, after the degumming process is completed, wash with high temperature water to inactivate the enzyme; Methods The corn husks were further degummed: 3g / L sodium hydroxide, 1.2g / L sodium pyrophosphate and 1g / L urea were used, the bath ratio was 1:10, and the heating rate was 1...

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Abstract

A method for preparing corn husk fiber, the method comprising (1) screening corn husks free of mildew, soaking them in water overnight, and then performing ultrasonic treatment for 10-20 minutes in an aqueous solution with a bath ratio of 1:15-20; (2 ) Soak corn bran fibers in hydrogen peroxide for pretreatment; (3) Degumming corn bran with biological enzymes; (4) Further degumming corn bran with chemical methods; (5) Finishing. The cornhusk fiber obtained by the preparation method of the invention has low residual glue rate, good fiber fineness and high strength.

Description

technical field [0001] The invention relates to a preparation process for reusing agricultural crop waste, in particular to a preparation method of corn husk fiber, which belongs to the technical field of renewable resource utilization. Background technique [0002] Maize is one of the most widely distributed crops in the world, and its planting area is second only to wheat and rice. It is widely planted in most areas of our country. After the corn is mature, the corn kernels are collected, and the corn cobs and corn husks are usually discarded. The re-use rate of abundant corn husk resources is very low, and it is only limited to feed, etc., and a small part will be compiled into handicrafts, used as living fuel, and polluted the environment. In order to make full use of natural resources and reduce waste and environmental pollution, after degumming corn husks, it can be used in industries instead of other fibers, such as making wood-based panels, cushioning materials, fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/00
Inventor 李忠仁
Owner 青岛晟任现代农业发展有限公司
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