Method for manufacturing cellulose fibroin composite fiber by using solvent method

A composite fiber and cellulose technology, applied in spinning solution preparation, fiber treatment, wet spinning, etc., can solve environmental pollution and other problems, achieve good mechanical strength, benefit environmental protection and operator health, and process energy consumption and low operating costs

Inactive Publication Date: 2008-07-16
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method for preparing cellulose silk protein composite fiber by solvent method, which uses ionic liquid as solvent to dissolve cellulose and silk protein, and process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Mix 9.95 parts of pulverized pulp and 0.05 parts of silk protein, mix well with 100 parts of [BMIM]Cl (1-butyl-3-methyl-imidazole hydrochloride) ionic liquid, and stir at 45°C for 24 hours, A spinning solution is obtained.

[0028] After the spinning solution is filtered and defoamed, it enters a coagulation bath containing 5% ionic liquid through a porous spinneret, and the temperature of the coagulation bath is 25°C. After 10% plasticizing and stretching, then through procedures such as washing, bleaching, oiling, and drying, the spinning speed is 5 m / min, and the fiber with a strength of 3.2 cN / dtex is obtained.

Embodiment 2

[0030] Mix 9 parts of pulverized pulp and 1 part of silk protein, mix them evenly with 200 parts of [BMIM]Cl ionic liquid, and stir at 100°C for 120 hours to obtain a spinning solution.

[0031] After the spinning solution is filtered and defoamed, it enters the water coagulation bath through the porous spinneret, and the temperature of the coagulation bath is 15°C. After 1% plasticizing and stretching, then through procedures such as washing, bleaching, oiling, and drying, the spinning speed is 20 m / min, and the fiber with a strength of 3.5 cN / dtex is obtained.

Embodiment 3

[0033] Mix 9 parts of pulverized pulp and 1 part of silk protein, mix well with 40 parts of [EMIM]Ac (1-ethyl-3-methylimidazolium acetate) ionic liquid, and stir at 60°C for 80 hours to obtain spinning solution.

[0034] After the spinning solution is filtered and defoamed, it enters a coagulation bath containing 25% ionic liquid through a porous spinneret, and the temperature of the coagulation bath is 55°C. After 8% plasticizing and stretching, then through procedures such as washing, bleaching, oiling, and drying, the spinning speed is 30 m / min, and the fiber with a strength of 4.0 cN / dtex is obtained.

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PUM

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Abstract

The invention relates to a method for adopting a solvent method to prepare celluloses silk protein composite fibers and the method comprises: (1) the crushing celluloses and the silk protein are uniformly mixed with ionic liquids and the mixture is dissolved for 1 to 120 hours under the temperature of 25 to 160 DEG C, and the spinning solution is formed the total solid content of which is 3 to 40 percent, wherein, the mixture ratio of the celluloses and the silk protein is 99:1 to 1:99; (2) after filtering and deaeration, spinning and coagulating bath solidifying are carried out; (3) the composite fibers are formed after a plurality of steps such as tension, water-washing, bleaching, oiling and drying. By adopting the ionic liquids to prepare fibers, the long and complex production processes of the viscose method are avoided, the production process is significantly shortened, the energy consumption of technique and the operation cost are low, the cellulose composite fibers have good mechanical strength and the mechanical property is significantly higher than the corresponding conventional viscose fibers produced by the viscose method. The method can be used for manufacturing underclothes and handkerchief, and also various clothing materials can be made after blended spinning or pure spinning.

Description

technical field [0001] The invention belongs to the field of composite fiber preparation, in particular to a method for preparing cellulose silk protein composite fiber by using a solvent method. Background technique [0002] Among all substances in nature, cellulose not only has a large reserve, but also has a huge recovery capacity. Only very little cellulose is currently made into fibers. The amount of cellulose used to make fibers and films is less than 4% of the world's industrially produced cellulose. With the continuous deepening of human understanding of nature and the increasing shortage of resources such as oil, coal, and natural gas, the utilization of cellulose will gradually expand. Since cellulose fiber can be converted into water vapor and carbon dioxide by biodegradation or safe combustion, the cellulose fiber causes less environmental damage caused by waste. Therefore, the development of cellulose fibers is very necessary. [0003] At present, the viscos...

Claims

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Application Information

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IPC IPC(8): D01D1/02D01D1/10D01D5/06
Inventor 何春菊王庆瑞陈雪英孙俊芬
Owner DONGHUA UNIV
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