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Method of preparing Lyocell by taking bamboos as raw material

A bamboo fiber and fiber technology, which is applied in the field of preparing lyocell fiber, can solve the problems of high cost, poor quality, immature development of bamboo lyocell fiber, etc., and achieve the goals of less environmental pollution, short growth cycle and increased economic value Effect

Active Publication Date: 2019-01-18
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main raw material of lyocell fiber is cellulose, in order to obtain high-quality bamboo lyocell fiber, pectin, lignin and hemicellulose must be removed, otherwise, the quality of bamboo lyocell fiber will be poor , which will lead to higher cost and lower quality
Therefore, the development of bamboo lyocell fiber in the market is still immature

Method used

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  • Method of preparing Lyocell by taking bamboos as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Cleaning: Weigh 2000 grams of raw bamboo, cut the raw bamboo with saw blades, and saw it into small irregular pieces of raw bamboo. Among them, the raw bamboo is fresh moso bamboo that has just been sawn back, and the diameter of the small piece of raw bamboo The length is 1-2 cm. Wash the sawn small pieces of raw bamboo with warm water, add a cleaning agent (water-based cleaning agent, produced by Shenzhen Yuanan Technology Co., Ltd.), the amount of cleaning agent accounts for 0.01% of the small pieces of raw bamboo, the quality of the small pieces of raw bamboo (g ) The bath ratio to the volume (mL) of the detergent aqueous solution is 1:100. After the cleaning is completed, rinse with tap water repeatedly.

[0027] (2) Degumming of raw bamboo fiber: Put the raw bamboo fiber processed in step (1) into pectinase with a mass concentration of 3 g / L, the treatment temperature is 50° C., and the enzyme action time is 48 hours.

[0028] (3) Removal of lignin: the bamboo fib...

Embodiment 2

[0038] (1) Cleaning: Weigh 2000 grams of raw bamboo, cut the raw bamboo with saw blades, and saw it into small irregular pieces of raw bamboo. Among them, the raw bamboo is fresh moso bamboo that has just been sawn back, and the diameter of the small piece of raw bamboo The length is 4 to 5 cm. Wash the sawn small pieces of raw bamboo with warm water and add a cleaning agent (water-based cleaning agent, produced by Shenzhen Yuanan Technology Co., Ltd.). The amount of cleaning agent accounts for 0.05% of the small pieces of raw bamboo. The quality of the small pieces of raw bamboo (g ) The bath ratio to the volume (mL) of the detergent aqueous solution is 1:150. After the cleaning is completed, rinse with tap water repeatedly.

[0039] (2) Degumming of raw bamboo fibers: Put the raw bamboo fibers processed in step (1) into pectinase with a mass concentration of 4 g / L, the treatment temperature is 60° C., and the enzyme action time is 48 hours.

[0040] (3) Removal of lignin: the ba...

Embodiment 3

[0050] (1) Cleaning: Weigh 2000 grams of raw bamboo, cut the raw bamboo with saw blades, and saw it into small irregular pieces of raw bamboo. Among them, the raw bamboo is fresh moso bamboo that has just been sawn back, and the diameter of the small piece of raw bamboo The direction length is 3 to 4 cm. Wash the sawn small pieces of raw bamboo with warm water and add a cleaning agent (water-based cleaning agent, produced by Shenzhen Yuanan Technology Co., Ltd.). The amount of cleaning agent accounts for 0.06% of the small piece of raw bamboo. The quality of the small piece of raw bamboo (g ) The bath ratio to the volume (mL) of the detergent aqueous solution is 1:140. After the cleaning is completed, rinse with tap water repeatedly.

[0051] (2) Degumming of raw bamboo fiber: Put the raw bamboo fiber processed in step (1) into pectinase with a mass concentration of 4 g / L, the treatment temperature is 55° C., and the enzyme action time is 40 hours.

[0052] (3) Removal of lignin: ...

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Abstract

The invention relates to a method of preparing Lyocell by taking bamboos as a raw material. The method comprises the following steps: by taking bamboos as the raw material, extracting cellulose from the bamboos by means of process methods such as degumming, lignin removal, and hemicelluloses removal and the like, and then dissolving bamboo cellulose in an N-methylmorpholine-N-oxide aqueous solution to prepare a spinning solution; feeding the spinning solution into a spinning system, vertically stretching sprayed silk yarns in air, and feeding the silk yarns to a condensing bath to be condensedto fibers; and preparing the Lyocell from the fibers through the processes such as alcohol washing, bleaching, washing, oiling and drying. The dry breaking strength of the Lyocell prepared by the method is between 44 cN / tex and 47 cN / tex, the dry elongation at break thereof is between 13% and 15%, the wet breaking strength thereof is between 29 cN / tex and 32 cN / tex, the wet elongation at break thereof is between 15% and 17%, and the strong performance thereof is close to that of purchased Lyocell.

Description

Technical field [0001] The invention belongs to the technical field of lyocell fibers, and specifically relates to a method for preparing lyocell fibers using bamboo as a raw material. Background technique [0002] Bamboo is a characteristic resource of China, and the use of bamboo in the textile field is a new application direction of bamboo that has developed rapidly in recent years. Bamboo fiber textiles are soft to the touch, cool and breathable. Bamboo fibers can be spun purely or blended with other fibers to make towels, T-shirts, socks and other products. [0003] Lyocell fiber is a regenerated cellulose fiber produced by a new solvent method, that is, using N-methylmorpholine-N-oxide (abbreviation: NMMO) as a solvent to directly dissolve spinning pulp, and dry spray, Regenerated cellulose fiber prepared by wet spinning and other processes. Lyocell fiber has excellent mechanical properties and has the advantages of other fibers, such as the comfort of cotton fiber, the dra...

Claims

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Application Information

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IPC IPC(8): D01F2/00D01F11/02D01D5/06D21C5/00
CPCD01D5/06D01F2/00D01F11/02D21C5/005
Inventor 彭雄义殷国益董雄伟蔡映杰王强夏明桂
Owner WUHAN TEXTILE UNIV
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