Preparation and application of cellulose mixed fibre using ion liquid as solvent

An ionic liquid and fiber blending technology, which is used in spinning solution preparation, fiber chemical post-treatment, fiber treatment, etc., to achieve the effects of environmental protection and operator health, good mechanical strength, and shortened production process.

Inactive Publication Date: 2007-12-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chitin and chitosan have antibacterial, antipruritic, deodorant, deodorizing, anti-inflammatory, pain-relie

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Mix 9.95 parts of pulverized pulp and 0.05 parts of chitin, and mix them evenly with 100 parts of [BMIM]Cl ionic liquid, and stir at 45° C. for 24 hours to obtain a spinning solution. 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

[0028] Mix 9 parts of pulverized pulp and 1 part of chitin, mix them evenly with 200 parts of [BMIM]Cl ionic liquid, and stir at 100° C. for 120 hours to obtain a spinning solution. 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

[0030] Mix 9 parts of pulverized pulp and 1 part of chitin, and mix evenly with 40 parts of [AMIM]Br ionic liquid, and stir at 60° C. for 80 hours to obtain a spinning solution. 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 present invention relates to a method for preparing cellulose polyblend fiber by using ionic liquid as solvent and its application method. Said preparation method includes the following steps: (1), uniformly mixing pulverized cellulose, chitin/chitosan and ionic liquid, dissolving them for 1-80 h at 25-160 deg.C so as to obtain the uniform stable spinning solution whose total solid content is 3-40%; (2), filtering and defoaming, then making the spinning solution be passed through single-hole or multi-hole spinneret, and fed into a coagulating bath and solidified, its spinning speed is 5-150 m/min; and (3), plasticizing, drawing, washing, bleaching, oiling and drying so as to obtain the invented cellulose polyblend fiber product. The spinning solution prepared by aid invention also can be used for preparing hollow fiber membrane, specially, can be used for making artificial organ and membrane for water purifier.

Description

technical field [0001] The invention belongs to the preparation and application of cellulose blended fibers, in particular to the preparation and application of cellulose blended fibers using ionic liquid as a solvent. Background technique [0002] Among all substances in nature, cellulose not only has a large reserve, but also has a huge recovery capacity. At present, only a very small amount of cellulose is made into fibers, and the amount of cellulose used to make fibers and films is less than 4% of the world's industrial production of 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. [0003] Since cellulose fiber can be biodegraded or safely burned into water vapor and carbon dioxide, the cellulose fiber causes less damage to the environment caused by waste, so the development of cellulose fiber is very necessary. At ...

Claims

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Application Information

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IPC IPC(8): D01D1/02D01D5/00D01C1/00
Inventor 何春菊王庆瑞陈雪英孙俊芬
Owner DONGHUA UNIV
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