Preparation method of mulberry fibers

A technology of mulberry fiber and cellulase, which is applied in the chemical post-treatment of fibers, fiber treatment, textiles and papermaking, etc., can solve the problems of complex operation, long process flow, environmental pollution, etc., and achieve smooth fiber surface and degumming rate High effect with little damage

Pending Publication Date: 2022-07-22
SUZHOU UNIV
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Problems solved by technology

Chinese patent CN108588854 A discloses a preparation method of mulberry fiber. The preparation method includes impurity removal, degumming and oil supply. The diatom powder is mixed according to a specific ratio, and the pH is adjusted to a specific value. The preparation process of the complex flora of this invention is complicated
Chinese patent CN 104032380 A discloses a method for preparing mulberry fiber. The preparation method includes impurity removal, binding, cage packing, chemical pretreatment, supercritical carbon dioxide fluid degumming treatment and biological enzyme degumming treatment, water washing, dehydration, Oiling, combing, and drying, wherein the chemical pretreatment method includes pickling treatment and alkali-oxygen treatment. This invention has a long process flow and consumes a lot of energy and water, so it is not suitable for large-scale production
All of the above degumming methods have the disadvantages of complex operation, and the addition of chemicals will cause environmental pollution, which does not conform to the concept of ecological and environmental protection and harmonious development. Therefore, it is necessary to invent a green and easy-to-operate mulberry fiber preparation method

Method used

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  • Preparation method of mulberry fibers

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preparation example Construction

[0022] The purpose of the present invention is to provide a preparation method of mulberry fiber, including impurity removal→microbial fermentation→enzymatic degumming→ultrasonic treatment.

[0023] Removal of impurities: refers to boiling and peeling of mulberry branches → mechanical beating of mulberry peels after washing → soaking mulberry peels in 75-80 ℃ impurity removal liquid for 3-5 hours; impurity removal liquid is formed by dissolving tea saponin, and the mass concentration is 4-6 g / L, The mulberry bark is soaked in impurity removal liquid, and the bath ratio is 1g: 17-20mL.

[0024] Microbial fermentation: refers to putting the mulberry bark after impurity removal in the compound bacterial culture solution at 26°C for 28 days, and then washing with water to remove the bacterial solution and part of the gum; the mass concentration of the mulberry bark treated with the compound bacterial community culture solution is 24% The complex flora includes Bacillus licheniform...

Embodiment 1

[0031] Preparation method of mulberry fiber:

[0032] (1) Removal of impurities: mulberry branches are boiled and peeled → mulberry peels are mechanically beaten after washing → soak mulberry peels in 80 ° C impurity removal liquid for 3 hours; impurity removal liquid is formed by dissolving tea saponin, and the mass concentration of impurity removal liquid is 5g / L, The mulberry bark is soaked in impurity removal liquid, and the bath ratio is 1:18;

[0033] (2) Microbial fermentation: put the impurity-removed mulberry bark in a compound bacterial culture solution at 26°C for 28 days, and then wash with water to remove the bacterial solution and part of the gum; the mass concentration of the mulberry bark treated with the composite bacterial community culture solution is: 24%; the complex flora includes Bacillus licheniformis, Bacillus subtilis and EM bacteria with a mass ratio of 1:0.2:0.5;

[0034] (3) Enzymatic degumming: put the mulberry bark after microbial fermentation i...

Embodiment 2

[0038] Preparation method of mulberry fiber:

[0039] (1) Impurity removal: mulberry branches are boiled and peeled → mulberry bark is washed and mechanically beaten → soaked mulberry bark in 75°C impurity removal solution for 5h; The mulberry bark is soaked in impurity removal liquid, and the bath ratio is 1:20;

[0040] (2) Microbial fermentation: put the impurity-removed mulberry bark in a compound bacterial culture solution at 26°C for 28 days, and then wash with water to remove the bacterial solution and part of the gum; the mass concentration of the mulberry bark treated with the composite bacterial community culture solution is: 24%; the complex flora includes Bacillus licheniformis, Bacillus subtilis and EM bacteria with a mass ratio of 1:0.3:0.5;

[0041] (3) Enzymatic degumming: put the mulberry bark after microbial fermentation in the degumming solution at 45 °C for 3 hours, and then wash with water to remove the degumming solution and gum; the mulberry bark is tre...

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Abstract

The invention discloses a mulberry fiber preparation method which is simple and easy to operate, high in product economic benefit and suitable for large-scale production and processing. Before fiber extraction, mulberry bark is subjected to pretreatment such as beating and soaping, and the problem that microorganism-enzyme combined degumming is not thorough can be effectively solved. In the microbial fermentation process, bacteria take colloids as nutrient substances, macromolecular structures of the colloids in the mulberry bark are damaged, gaps among macromolecules are enlarged, fiber aggregates become loose, and enzyme secreted by microorganisms can conduct preliminary degumming on the mulberry bark. And performing biological enzyme degumming through combined treatment of cellulase, alkaline pectinase and neutral protease to obtain mulberry fibers. And further separating the fibers by using the vibration effect of an ultrasonic cell crusher to obtain micron-sized mulberry fibers. The prepared mulberry bark fiber is smooth in surface, high in degumming rate and small in fiber damage, chemical reagents are not used in the whole process, and the requirement for environmental protection is met.

Description

technical field [0001] The invention belongs to the technical field of fiber preparation, and relates to a preparation method of mulberry fiber. Background technique [0002] Mulberry is widely distributed in the world. my country is the origin and distribution center of mulberry plant resources. Zhejiang, Guangdong, Jiangsu, Sichuan and Shandong are the five major sericulture bases in my country. The chemical fiber industry based on oil and natural gas resources is developing day by day, which not only produces huge and refractory "white pollutants", but also the oil and natural gas resources are facing depletion. With the conception of ecology, environmental protection, green and other concepts, natural and environmentally friendly green fibers and their products are more and more favored by people. Mulberry fiber is a natural cellulose fiber, and its main chemical component is cellulose. It has unique properties, renewable raw materials, and can be naturally degraded aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/04D01C1/00
CPCD01C1/04D01C1/00
Inventor 杨培芹潘志娟
Owner SUZHOU UNIV
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