Clean jute fiber degumming method

A degumming method, hemp fiber technology, applied in biological and environmental protection, textile fields, can solve the problems of high cost of chemical degumming, poor stability of enzyme activity, poor cohesion and other problems

Active Publication Date: 2017-11-07
晟颐天祥天然纤维科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional hemp fiber degumming is mainly chemical degumming with caustic soda, using strong acid, strong alkali, high temperature and high pressure cooking, so that the fiber molecular chain is broken and the crystallinity is improved. Feel rough, itchy after taking
Moreover, the chemical degumming technology of hemp fiber has problems such as high cost and serious pollution.
On the other hand, in order to solve the problems of high cost and serious pollution of chemical degumming, some new degumming methods have been adopted in my country since the 1980s, such as enzymatic degumming and microbial degumming. serious problem
However, the activity stability of the enzyme in the enzymatic degumming method is poor, and the degumming efficiency is low; the microbial degumming has a low enzyme-producing ability of the strains, not only the degumming efficiency is low, but also the strain cultivation technology requirements are high. The degumming technology of these two degumming methods is still immature. There is still a long way to go from industrial production

Method used

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  • Clean jute fiber degumming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Example 1 Application of Plant Cellulose Extractant in Hemp Fiber Degumming Project

[0060] 1. Preparation of cooking liquid: preparation of cellulose extracting agent—the volume ratio of liquid A to liquid B is 5:1; then dilute with water at a ratio of 1:10 to prepare cooking liquid.

[0061] 2. Process: Combing 5kg of hemp fiber raw material for impurity removal; liquor ratio of 1:10; adding cooking liquid and cooking for 50 minutes; cooking temperature at 80°C; hemp fiber components before and after washing, bleaching, drying, health preservation, and fine carding The test results are shown in Table 1, specifically:

[0062] Step 1: Opening, removing impurities and combing the hemp fiber.

[0063] Step 2: put 5 kg of the preliminarily carded hemp fiber into a cooking pot, and add the prepared cooking liquid; the cooking bath ratio is 1:10; normal pressure, cooking temperature 80°C; cooking time 50min.

[0064] Step 3: send the hemp fiber after cooking into the was...

Embodiment 2

[0067] 1. Cooking liquor preparation: all the cooking raffinate (the raffinate containing solid content≦10%) in the embodiment 1 step 2 is used as a part of the cooking liquor, and according to the bath ratio requirement, the cooking liquor insufficient part is prepared with embodiment 1 Cooking liquid (that is, the volume ratio of liquid A and liquid B is 5:1; then diluted with water at a ratio of 1:10, the prepared cooking liquid) is supplemented (the newly prepared cooking liquid accounts for 30% of the total cooking liquid) .

[0068] 2. The process is the same as in Example 1, and the hemp fiber component test results are shown in Table 1.

Embodiment 3

[0070] 1. Cooking liquid preparation: all the cooking raffinate (solid content≤10%) of step 2 gained in embodiment 2 is used as a part of cooking liquid, and according to bath ratio requirement, the insufficient part of cooking liquid is prepared with embodiment 1 The cooking liquid is replenished (the newly prepared cooking liquid accounts for 30% of the whole cooking liquid).

[0071] 2. The process is the same as in Example 1, and the hemp fiber component test results are shown in Table 1.

[0072] See Table 1 for the degumming effect of the hemp fibers cooked in Example 1, Example 2, and Example 3—that is, fiber index detection (cellulose, hemicellulose, pectin, lignin, fineness, and strength). It can be seen from Table 1 that the cellulose content is greatly increased; lignin and pectin are effectively reduced; the fineness and strength meet the requirements of spinnable high-count blended yarn. The cooking liquor developed by this patent can be well applied in the degum...

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Abstract

The invention relates to a clean jute fiber degumming method and belongs to the fields of textiles, biology and environmental protection. The clean jute fiber degumming method comprises a degumming step, wherein in the degumming step, the used cooking liquor is at least one of diluents of a cellulose extracting agent, residual liquor with the solid content of less than or equal to 10% and wastewater in which residues and lignin are removed; the extracting agent is prepared by mixing a solution A and a solution B; the solution A is alkali liquor; the solution B is prepared from crude enzyme fluid and an enzyme stabilizer; and the crude enzyme fluid is clarified crude enzyme fluid prepared by fermenting bacillus subtillis and separating the thallus. According to the method disclosed by the invention, jute fibers are treated in a bath by adopting the crude enzyme fluid and dilute alkali, so that the molecular structure of colloid in the original hemp is greatly changed, the stability of the colloidal complex is severely damaged, alternation and cycle of swelling-modification-colloid removing can be formed, and the aim of rapidly degumming the jute fibers is rapidly achieved under normal temperature conditions.

Description

technical field [0001] The invention relates to a method for degumming clean hemp fibers, which belongs to the fields of textile, biology and environmental protection. Background technique [0002] Hemp fiber is an ancient, beautiful fiber with cultural connotation, which occupies an important historical position in the history of natural fiber textile development in my country. The special ultra-fine microporous structure inside the hemp fiber makes it have a strong adsorption capacity, which can absorb harmful substances such as formaldehyde, benzene, toluene, ammonia in the air, and eliminate bad odors. And hemp fiber contains a variety of natural antibacterial trace elements, which can effectively inhibit the breeding of bacteria and mites, and play the role of antibacterial and anti-odor. At the same time, it also has superior air permeability and heat transfer properties. It is cool and pleasant to wear in summer, and comfortable in winter. The automatic constant temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/00
CPCD01C1/00
Inventor 季英超张欣高晨
Owner 晟颐天祥天然纤维科技有限公司
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