Method for preparing spinnable cellulosic fibers based on hydrogen bond depolymerization principle

A cellulose fiber and cellulose technology, applied in the field of textile fiber materials, can solve the problems of small dissolved cellulose, complicated preparation process, easy pollution, etc., and achieve the effects of shortened reaction time, simple operation process and high production efficiency

Inactive Publication Date: 2019-07-12
MINJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for preparing spinnable cellulose fiber based on the principle of hydrogen bond depoly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1

[0017] Mix betaine and glycerol at a molar ratio of 1:3, stir at 95°C for 2.5h to prepare 20g transparent solution, then add 1g bagasse dissolving pulp (DP=200~1200), 100°C, 90r / min Stir for 15 min under the conditions, and then move it into a cell pulverizer, and react for 25 min at a power of 1000W and a temperature of 2°C to prepare spinnable cellulose fibers with a yield of 93.0%. The spinnable cellulose fiber has relatively uniform size, high uniformity, less impurities, and good spinning formability.

Example Embodiment

[0018] Example 2

[0019] Mix betaine and glycerol at a molar ratio of 1:3, stir at 95℃ for 2.5 hours to prepare 54g transparent solution, and then add 2g rice straw dissolving pulp (DP> 1200), stirred for 20 minutes at 100°C and 90r / min, and then transferred to a cell crusher with a power of 1000W and a temperature of 5°C for 15 minutes to prepare spinnable cellulose fibers with a yield of 89.5%. The spinnable cellulose fiber has relatively uniform size, high uniformity, less impurities, and good spinning formability.

Example Embodiment

[0020] Example 3

[0021] Mix betaine and glycerol at a molar ratio of 1:3, stir at 95℃ for 2.5h to prepare 45g transparent solution, and then add 1.5g of mulberry bark dissolving pulp (DP=100~1000), 100℃, 90r / Stir for 25 minutes under the condition of 1 min, and then move it into a cell pulverizer, and react for 20 min at a power of 1000W and a temperature of 10°C to prepare spinnable cellulose fibers with a yield of 91.0%. The spinnable cellulose fiber has relatively uniform size, high uniformity, less impurities, and good spinning formability.

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Abstract

The invention discloses a method for preparing spinnable cellulosic fibers based on a hydrogen bond depolymerization principle. The method comprises the steps that a cellulosic raw material is added into a reaction solvent, through heating stirring, intramolecular and intermolecular strong hydrogen bonds which are bonded closely in the cellulosic raw material are depolymerized, cellulose, obtainedafter the hydrogen bonds are depolymerized, of a loose structure is placed in a cell crusher and subjected to cooperative treatment of the chemical action and the mechanical action, and the spinnablecellulosic fibers are obtained. In the method, the green solvent is adopted, the technological process is short, the efficiency is high, the production process is free of pollution, and the method isenergy-saving, environmentally friendly, low in cost and high in yield of the spinnable cellulosic fiber.

Description

technical field [0001] The invention belongs to the technical field of textile fiber materials, and in particular relates to a method for preparing spinnable cellulose fibers based on the principle of hydrogen bond depolymerization. Background technique [0002] Cellulose is the most abundant and abundant natural polymer compound on the earth. Its production raw materials are widely derived from cotton, cotton linters, straw, wheat straw, hemp, reed, mulberry bark, mulberry bark and bagasse, etc. It is a natural and renewable energy. Cellulose macromolecules are composed of hundreds of thousands of β-D-glucose units connected by β-1,4-glycosidic bonds. According to different degrees of polymerization, they can be divided into α-cellulose, β-cellulose and γ-fiber white. There are three hydroxyl (-OH) groups distributed at C2, C3, and C6 of each glucose unit. The presence of these groups makes cellulose have high chemical reactivity and can react chemically and physically wi...

Claims

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Application Information

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IPC IPC(8): C08J3/09D01F2/00C08L1/20
CPCC08J3/091C08J3/095C08J2301/02D01F2/00
Inventor 卢琳娜卢麒麟李永贵
Owner MINJIANG UNIV
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