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Chitosan composite fiber and preparation method thereof

A technology of chitosan fiber and composite fiber, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, textile and paper making, etc., can solve the problems that the function is difficult to maintain for a long time, the modification is easy to fall off, and the washing resistance is poor. Stable structure, good antibacterial and hygroscopic properties, and the effect of avoiding loss

Active Publication Date: 2020-11-24
TIANE CHEM FIBER GROUP CORP BAODING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface function modified fiber has poor washability, the modified material on the fiber surface is easy to fall off, and the functionality is difficult to maintain for a long time.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation method of chitosan composite fiber, concrete steps are as follows:

[0031] (1) prepare chitosan quaternary ammonium salt / alginic acid sol;

[0032]The chitosan quaternary ammonium salt solution is injected into the sodium alginate solution under stirring to obtain the chitosan quaternary ammonium salt / alginic acid sol, wherein the volume ratio of the chitosan quaternary ammonium salt solution and the sodium alginate solution is 1: 1. The ratio of the number of positive charges carried by chitosan quaternary ammonium salt molecules to the number of negative charges carried by sodium alginate molecules is 1; the concentration of chitosan quaternary ammonium salt solution and sodium alginate solution is 3.6g / L Stirring adopts a stirrer, the stirring rate is 100 rpm, and the time is 30 minutes; the dispersed phase particles in the prepared chitosan quaternary ammonium salt / alginic acid sol are uncharged, and are mainly chitosan quaternary ammonium salt / algi...

Embodiment 2

[0038] The preparation method of chitosan composite fiber, concrete steps are as follows:

[0039] (1) prepare chitosan quaternary ammonium salt / alginic acid sol;

[0040] The chitosan quaternary ammonium salt solution is injected into the sodium alginate solution under stirring to obtain the chitosan quaternary ammonium salt / alginic acid sol, wherein the volume ratio of the chitosan quaternary ammonium salt solution and the sodium alginate solution is 1: 1.1, the ratio of the number of positive charges carried by chitosan quaternary ammonium salt molecules to the number of negative charges carried by sodium alginate molecules is 1; the concentration of chitosan quaternary ammonium salt solution and sodium alginate solution is 7.5g / L Stirring adopts a stirrer, the stirring rate is 120 rpm, and the time is 40 minutes; the dispersed phase particles in the prepared chitosan quaternary ammonium salt / alginic acid sol are uncharged, and are mainly chitosan quaternary ammonium salt / a...

Embodiment 3

[0046] The preparation method of chitosan composite fiber, concrete steps are as follows:

[0047] (1) prepare chitosan quaternary ammonium salt / alginic acid sol;

[0048] The chitosan quaternary ammonium salt solution is injected into the sodium alginate solution under stirring to obtain the chitosan quaternary ammonium salt / alginic acid sol, wherein the volume ratio of the chitosan quaternary ammonium salt solution and the sodium alginate solution is 0.9: 1. The ratio of the number of positive charges carried by chitosan quaternary ammonium salt molecules to the number of negative charges carried by sodium alginate molecules is 1; the concentration of chitosan quaternary ammonium salt solution and sodium alginate solution is 1.5g / L Stirring adopts a stirrer, the stirring rate is 160 rpm, and the time is 50 minutes; the dispersed phase particles in the prepared chitosan quaternary ammonium salt / alginic acid sol are uncharged, and are mainly chitosan quaternary ammonium salt / a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a chitosan composite fiber and a preparation method thereof. The method comprises the following steps: spinning mixed liquor of chitosan quaternary ammonium salt / alginic acidsol and chitosan spinning solution to prepare the chitosan composite fiber, wherein a dispersion phase particle in the chitosan quaternary ammonium salt / alginic acid sol is a chitosan quaternary ammonium salt / alginic acid conjugate mainly. The prepared chitosan composite fiber is mainly formed by a chitosan fiber matrix and the chitosan quaternary ammonium salt / alginic acid conjugate distributed in the chitosan fiber matrix. The chitosan quaternary ammonium salt / alginic acid conjugate is mainly formed by bonding chitosan quaternary ammonium salt and alginic acid through an ionic bond. The chitosan quaternary ammonium salt / alginic acid conjugate is bonded with the chitosan fiber matrix through a hydrogen bond mainly. According to the chitosan composite fiber and the preparation method thereof provided by the invention, the preparation method is simple in operation, the prepared chitosan composite fiber is stable in structure, good in mechanical property, anti-bacterial property and hygroscopic property, and has a good promotional value.

Description

technical field [0001] The invention belongs to the field of functional fibers and relates to a chitosan composite fiber and a preparation method thereof. Background technique [0002] Chitosan fiber is a kind of polymer fiber with natural antibacterial and anti-mildew properties, and it is also one of the regenerated fibers with independent intellectual property rights and industrialization in my country. However, the antibacterial properties of chitosan fibers will be weakened in neutral pH environment, which limits the application fields of chitosan fibers. [0003] At present, adding antibacterial agents to chitosan fibers is the main method to improve the antibacterial properties of chitosan fibers. For example, Chinese Patent 1 (Application No. 201410497949.7) discloses a preparation method of chitosan fiber-loaded nano-silver chloride. Chinese patent 2 (application number 201610450728.3) discloses a method for preparing chitosan copper fibers by adding copper salt t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/00D01F1/10
CPCD01F1/10D01F1/103D01F9/00
Inventor 姚勇波王东兴王乐军范磊刘怡宁陈思
Owner TIANE CHEM FIBER GROUP CORP BAODING
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