Chitosan fiber and preparation method thereof

A technology of chitin fiber and bacterial cellulose, applied in the direction of fiber chemical characteristics, spinning solution preparation, cellulose/protein conjugated artificial filament, etc., can solve the problems of chitin fiber fiber softness and low fiber orientation , to achieve the effects of improving order, optimizing concentration, and improving fiber orientation

Inactive Publication Date: 2020-01-07
YANGZHOU RIXING BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a chitin fiber and its preparation method, which has the advantages of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1: A chitin fiber comprising the following raw materials in parts by weight: 50 parts of chitosan powder, 100 parts of bacterial cellulose gel, 40 parts of NAOH, 40 parts of urea, 40 parts of thiourea, 120 parts of water And 80 parts of ethanol.

[0025] Another technical problem to be solved by the present invention is to provide a method for preparing chitin fiber, which includes the following steps:

[0026] 1) Take 40 parts of NAOH, 40 parts of urea, 40 parts of thiourea and 40 parts of water, put 40 parts of NAOH, 40 parts of urea, 40 parts of thiourea and 40 parts of water into the preparation kettle for mixing, and make the solvent after fully mixing A. Divide solvent A into two equally to obtain solvents B and C;

[0027] 2) Take 80 parts of ethanol and 80 parts of water, put 80 parts of ethanol and 80 parts of ethanol water into the preparation kettle for mixing, and make a coagulation bath after fully mixing;

[0028] 3) Take 50 parts of chitosan powder, put ...

Example Embodiment

[0033] Example 2: A chitin fiber comprising the following raw materials in parts by weight: 60 parts of chitosan powder, 120 parts of bacterial cellulose gel, 60 parts of NAOH, 60 parts of urea, 60 parts of thiourea, and 160 parts of water And 100 parts of ethanol.

[0034] Another technical problem to be solved by the present invention is to provide a method for preparing chitin fiber, which includes the following steps:

[0035] 1) Take 60 parts of NAOH, 60 parts of urea, 60 parts of thiourea and 60 parts of water, put 60 parts of NAOH, 60 parts of urea, 60 parts of thiourea and 60 parts of water into the preparation kettle for mixing, and then make the solvent after fully mixing A. Divide solvent A into two equally to obtain solvents B and C;

[0036] 2) Take 100 parts of ethanol and 100 parts of water, put 100 parts of ethanol and 100 parts of ethanol water into the preparation kettle for mixing, and make a coagulation bath after fully mixing;

[0037] 3) Take 60 parts of chitosa...

Example Embodiment

[0042] Example 3: A chitin fiber, comprising the following raw materials in parts by weight: 55 parts of chitosan powder, 110 parts of bacterial cellulose gel, 50 parts of NAOH, 50 parts of urea, 50 parts of thiourea, and 140 parts of water And 90 parts of ethanol.

[0043] Another technical problem to be solved by the present invention is to provide a method for preparing chitin fiber, which includes the following steps:

[0044] 1) Take 50 parts of NAOH, 50 parts of urea, 50 parts of thiourea and 50 parts of water, put 50 parts of NAOH, 50 parts of urea, 50 parts of thiourea and 50 parts of water into the preparation kettle for mixing, and then make the solvent after thoroughly mixing A. Divide solvent A into two equally to obtain solvents B and C;

[0045] 2) Take 90 parts of ethanol and 90 parts of water, put 90 parts of ethanol and 90 parts of ethanol water into the preparation kettle for mixing, and make a coagulation bath after fully mixing;

[0046] 3) Take 55 parts of chitos...

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PUM

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Abstract

The invention relates to the technical field of chitosan fibers, and discloses a chitosan fiber which comprises, by weight, 50-60 parts of chitosan powder, 100-120 parts of bacterial cellulose gel, 40-60 parts of NAOH, 40-60 parts of urea, 40-60 parts of thiocarbamide, 120-160 parts of water and 80-100 parts of ethyl alcohol. According to the chitosan fiber and a preparation method thereof, the NaOH, the urea, the thiocarbamide and the water serve as a solvent system to dissolve the chitosan powder and the bacterial cellulose gel to obtain chitosan and bacterial cellulose solution, chitosan/bacterial cellulose mixed spinning fluid is prepared according to a certain ratio, uniform, stable and easily spun compound spinning fluid with suitable viscosity is acquired, the total concentration ofhigh molecules reaches 3-10%, viscosity reaches 50-100cPa.s, the NaOH, the urea, the thiocarbamide and the water serve as solvents to prepare the mixed spinning fluid, the solvents are green, environmentally friendly, low in cost and easy to recycle, and the method solves the problems that solvents are high in cost, solvents in fibers cannot be completely removed and difficultly recycled and thelike in the prior art.

Description

technical field [0001] The invention relates to the technical field of chitin fibers, 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 and fungi, and its reserves are second only to plant fibers. 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 activity 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 bind to human bone The similar structure of collagen tissue has good compatibility with the human body. It can be decomposed and absorbed by the hum...

Claims

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Application Information

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IPC IPC(8): D01F8/02D01F8/18D01D1/02D01D5/06D01D5/14
CPCD01D1/02D01D5/06D01D5/14D01F8/02D01F8/18
Inventor 尹学琼张超丁振中管平海高小燕方祥张万宏王士刚徐俊山
Owner YANGZHOU RIXING BIO TECH
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