Chitin fiber and preparation method thereof

A chitin fiber and chitin technology, applied in the fiber field, can solve the problems of poor spinnability and weaving performance of chitin fiber, low mechanical properties of chitin fiber, endangering the health of operators, etc., and achieve excellent mechanical properties , good dry elongation at break, good solubility effects

Active Publication Date: 2010-06-23
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In summary, due to the low solubility and difficulty of dissolving chitin in traditional solvents, and the traditional solvent systems are volatile, these solvents cause serious pollution to the environment and endanger the health of operators
Moreover, just because of its poor dissolution in traditional solvents, it causes the defect that the mechanical properties of chitin fibers in the prior art are not high, which makes the spinnability and weavability of chitin fibers poor, and needs to be processed with other fibers. Blended to improve its spinnability and weavability

Method used

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  • Chitin fiber and preparation method thereof
  • Chitin fiber and preparation method thereof
  • Chitin fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Pulverizing chitin, then adding an ionic liquid to dissolve it to obtain a spinning stock solution;

[0053] Firstly, the chitin is pulverized by using a chitin-specific pulverizer so that the obtained chitin has a fineness of about 300 meshes. The chitin is chitin with a deacetylation degree of 0%. The pulverized chitin is put into the ionic liquid for dissolving, wherein the amount of the ionic liquid is 85% of the weight of the spinning stock solution, and it is dissolved at a temperature of 50° C. for 50 hours. When dissolving, it is stirred so that the chitin is dissolved in the ionic liquid fully dissolved. After fully dissolving, the spinning stock solution is obtained, and its concentration is 15%.

[0054] (2) filtering and defoaming the spinning dope, and then performing dry spray-wet spinning;

[0055] After the spinning dope is filtered and defoamed, dry spray-wet spinning is carried out, and filament bundles are obtained after spinning. When perform...

Embodiment 2

[0060] (1) Pulverizing chitin, then adding an ionic liquid to dissolve it to obtain a spinning stock solution;

[0061] First, the chitin is crushed, and a chitin-specific pulverizer is used during the crushing, so that the obtained chitin has a fineness of about 400 meshes. The chitin is chitin with a deacetylation degree of 40%. The pulverized chitin is put into an ionic liquid for dissolving, wherein the amount of the ionic liquid is 75% of the weight of the spinning stock solution, and it is dissolved for 8 hours at a temperature of 100°C. The ionic liquid is [EMIN]Ac- (the Chinese name is Acetate (1-ethyl-3-methylimidazolium salt) aqueous solution, when dissolving, stir to allow chitin to fully dissolve in the ionic liquid. After fully dissolving, the spinning stock solution is obtained, and its concentration is 25%.

[0062] (2) filtering and defoaming the spinning dope, and then performing dry spray-wet spinning;

[0063] After the spinning dope is filtered and defoa...

Embodiment 3

[0068] (1) Pulverizing chitin, then adding an ionic liquid to dissolve it to obtain a spinning stock solution;

[0069] Firstly, the chitin is pulverized by using a chitin-specific pulverizer so that the obtained chitin has a fineness of about 500 meshes. The chitin is chitin with a deacetylation degree of 80%. Put the pulverized chitin into the ionic liquid for dissolving, wherein the amount of the ionic liquid is 95% of the weight of the spinning stock solution, dissolve for 1 hour at a temperature of 150°C, and stir when dissolving, so that the chitin is dissolved in the ionic liquid fully dissolved. After fully dissolving, the spinning dope was obtained, the concentration of which was 5%.

[0070] (2) filtering and defoaming the spinning dope, and then performing dry spray-wet spinning;

[0071] After the spinning dope is filtered and defoamed, dry spray-wet spinning is carried out, and filament bundles are obtained after spinning. When performing dry jet-wet spinning,...

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Abstract

The invention discloses a chitin fiber and a method for preparing the chitin fiber by taking ionic liquid as solvent, wherein the method comprises the following steps: evenly mixing crushed chitin with the ionic liquid and dissolving the mixture at 50 to 150 DEG C for 1 to 50 hours so as to form homogeneous and stable spinning dope with the concentration of 3-25%; filtering and defoaming the spinning dope and then conducting dry-jet wet spinning, wherein coagulation bath consists of water or the mixture of water and the ionic liquid and the ionic liquid in the coagulation bath has the concentration of 0-60% and the temperature of 0-60%. The method has the advantage that: the ionic liquid adopted includes outstanding dissolution performance toward the chitin and is non-toxic and non-volatile simultaneously, thereby avoiding polluting environment and harming body of operating staff. The ionic liquid can be recovered effectively, which lowers production cost and economizes on resourses.

Description

technical field [0001] The invention relates to a fiber, in particular to a chitin fiber and a preparation method thereof. Background technique [0002] Chitin, also known as chitin, is widely found in the shells of insects and aquatic crustaceans and the cell walls of seaweeds, such as crabs, shrimps, squid bones, egg shells, cockroaches, fungi, etc., and its reserves are second only to plant fibres. Chitosan, also known as chitosan, is the only positively charged animal polymer found so far in nature. Because of its unsaturated cationic Harmful substances and harmful bacteria have a strong adsorption effect, so that it can inhibit the activities of harmful bacteria and make them inactive, so as to achieve the purpose of antibacterial, and chitin has both the structure of plant fibers and the ability to interact with human bone The similar structure of collagen tissue has good compatibility with the human body, and can be decomposed and absorbed by the human body's lysozy...

Claims

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Application Information

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IPC IPC(8): D01D5/06D01D1/02D01D10/06D01D11/00D01F9/00
Inventor 骆强孙玉山门爽
Owner CHINESE TEXTILE ACAD
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