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Microcrystalline Cellulose-Chitosan Fiber

A technology of microcrystalline cellulose and chitosan fibers, applied in the direction of cellulose/protein conjugated rayon, fiber chemical characteristics, conjugated rayon, etc., can solve the problem of poor spinnability and low purity of chitosan fibers , the preparation process is inconvenient and other problems, to achieve the effect of preventing the production of gelatin, saving raw materials, and improving the state of the spot

Inactive Publication Date: 2011-12-14
WUJIANG RUIFENG WEAVING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because chitosan molecular chains are connected with a large number of hydroxyl groups and amino groups, which carry positive charges for the molecules in acidic solution, which brings inconvenience to the preparation process, and the obtained chitosan fibers have low purity and poor spinnability.

Method used

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  • Microcrystalline Cellulose-Chitosan Fiber
  • Microcrystalline Cellulose-Chitosan Fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Chitosan 2.8g, glycerin 0.5g, zinc acetate 1.5g, microcrystalline cellulose 5g, water 90.2ml.

[0017] The concentration of acetic acid used to dissolve chitosan was 2.5g / 100ml.

[0018] refer to figure 1 As shown, take the prescribed amount of microcrystalline cellulose, feed it into the distilled water in the dissolution kettle 1, add acetic acid to acidify according to the concentration of 1.5-3.0g / 100ml; weigh chitosan and add the acidified microcrystalline cellulose obtained in step (1). Stir in the crystalline cellulose suspension to fully dissolve chitosan into a clear and transparent light yellow spinning stock solution. Under pressure, the stock solution passes through the plate and frame filter 2 to remove impurities and then enters the slow-release barrel 4. For degassing the stock solution in the stock solution barrel, during spinning, the stock solution passes through the metering pump 5 under nitrogen pressure, and after the filter 6, it is sprayed out f...

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Abstract

The invention relates to a microcrystalline cellulose-chitosan fiber, which is characterized in that the components contained in the stock solution and the mass ratio ranges of each component are as follows: chitosan 2wt%-5wt%, glycerin 0.1wt%-1.0wt %, zinc acetate 1wt%-5wt%, microcrystalline cellulose 1wt%-10wt%, and water. It is prepared by wet and dry method. Because of the addition of microcrystalline cellulose, the charged state of chitosan molecules is improved, the viscosity of chitosan acidic solution is reduced, and the generation of jelly is prevented, which replaces the traditional method of adding urea, isopropanol, dichloroacetic acid, etc. The raw materials produced by the jelly, as well as reagents such as acetic acid that act as viscosifiers and defoamers, save raw materials and reduce costs.

Description

technical field [0001] The invention relates to a chitosan-cotton-linen blended material, belonging to the technical field of textiles. Background technique [0002] Chitin is a natural biopolymer extracted from the shells of shrimp and crab insects and the cell walls of fungi and algae. Chitosan is the product of deacetylation of chitin after treatment. Chitin fiber and chitosan fiber are natural polymer fibers spun from chitin and chitosan solution through high-tech processing. [0003] Chitosan molecule has a linear structure, and its pyrolysis temperature is 280-300°C. It can only be dissolved in dilute acid solutions, such as formic acid, acetic acid, and salicylic acid. It has the characteristics of good biodegradability and can be spun into two categories: filament or short fiber. The filament is used for twisting medical sutures, and the short fiber is used to make medical accessories in the form of non-woven fabrics. Because chitosan molecular chains are connected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/02D01F8/18
Inventor 周桂荣
Owner WUJIANG RUIFENG WEAVING
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