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Medical chitosan fibre and preparation method thereof

A technology of chitosan fiber and chitosan, which is applied in fiber processing, fiber chemical characteristics, spinning solution preparation, etc., can solve the problems of uncomfortable feeling of human body and medical use, special process conditions, unsatisfactory safety, etc. To achieve good performance, stable fiber structure, high antibacterial effect

Active Publication Date: 2008-08-27
HISMER BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these current methods have the disadvantages of special process conditions, unsatisfactory safety, high production cost, poor quality, and not suitable for human comfort and medical use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Put 70 grams of chitosan with a molecular weight greater than 800,000 into pulverized, washed, dried, and put into 430ml of acetic acid solution (including 8.7ml and 421.3ml of acetic acid), and stir at 20°C for 2 hours to form a uniform chitosan. Sugar spinning solution. The spinning solution is filtered with a 400-mesh stainless steel filter cartridge. The pressure is controlled at 0.6-1.0 MPa, and then vacuumed for degassing. The defoamed slurry is sent to the spinneret by a metering pump. The hole diameter of the spinneret is 0.06 mm, and the number of holes is 600. The coagulation bath is sodium hydroxide aqueous solution, the content of sodium hydroxide is 5%, the temperature of the coagulation bath is 50°C, and the stretching ratio of the fiber is 1 to 3 times. After leaving the coagulation bath, the fiber is washed with warm water at 30°C, and finally dried , which is made of chitosan fiber. The single fiber fineness is 2.2dtex, the strength is 1.5CN / dtex, an...

Embodiment 2

[0023] Put 1,000 grams of chitosan with a molecular weight of 1.3 million into 6,000 ml of acetic acid solution (including 120 ml and 5,880 ml of acetic acid) after being crushed, washed with water, and dried, and stirred at 20°C for 2 hours to form a uniform chitosan. spinning solution. The spinning solution is filtered with a 400-mesh stainless steel filter cartridge. The pressure is controlled at 0.8-1.0 MPa, and then vacuumed for degassing. The defoamed slurry is sent to the spinneret by a metering pump. The hole diameter of the spinneret is 0.1 mm, and the number of holes is 800. The coagulation bath is an aqueous solution of sodium hydroxide, the content of sodium hydroxide is 5%, the temperature of the coagulation bath is 50°C, and the stretching ratio of the fiber is 2 times. After leaving the coagulation bath, the fiber is washed with warm water at 30°C, and finally dried, that is Made of chitosan fiber. The single fiber fineness is 2.8dtex, the strength is 1.9CN / d...

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Abstract

The invention relates to medical chitosan fiber in the textile processing field and a preparing method thereof, the method for preparing spinning fluid comprises the following steps: arranging the chitosan powder in glacial acetic acid water solution and slowly dissolving by stirring under the condition of controlling temperature and time, wherein the dissolution temperature is 10-30DEG C, the dissolution time is 10-48h, and the stirring speed is 60-180r / min, wherein the chitosan powder occupies 3%-10%, dissolvent glacial acetic acid occupies 1%-5% and the other is water in the spinning raw materials, the chitosan content is more than 99.9% in chitosan fiber, and the chitosan fiber has higher molecular weight, sufficient amido, steady fiber structure, and good antibacterial property, brute force and hygiene security property.

Description

Technical field: [0001] The invention relates to a chitosan fiber product in the field of textile processing and a preparation method thereof, in particular to medical chitosan fiber and a preparation method thereof. Background technique: [0002] Chitosan is obtained by deacetylation of chitin, also known as chitosan. Chitin is a polysaccharide widely distributed in nature, and is the main component of the cell walls of various fungi and shells of shrimp, crab, insects, etc. Chitin can be extracted from different sources, and the commercially available chitin is generally extracted and purified from shrimp and crab shells. The physical and chemical properties of chitosan are quite different from those of chitin. Chitosan can be dissolved in organic acid (acetic acid, formic acid) and inorganic acid in the form of viscous colloid, and can be made into fiber after coagulation and dehydration. There are active amino groups in chitosan molecules, which have the function of c...

Claims

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Application Information

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IPC IPC(8): D01D1/02D01D1/10D01D10/00D01D10/06D01D11/00D01F9/00
Inventor 周家村马建伟
Owner HISMER BIO TECH
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