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A kind of functional polysaccharide antibacterial modified natural fiber and preparation method thereof

A natural fiber and functional technology, applied in the field of preparation of functional polysaccharide composite fiber, to achieve the effects of environmental friendliness, low production cost and good dyeability

Active Publication Date: 2020-05-22
江军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, there are few methods in the existing technology that can effectively cross-link functional polysaccharides and fibers, and the technology of fabric polysaccharide modified fibers has broad development prospects.

Method used

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  • A kind of functional polysaccharide antibacterial modified natural fiber and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment is to carry out Radix Radix isatidis polysaccharide modification treatment on cotton fiber, comprises the following steps:

[0029] 1) Pretreating the natural fibers, soaking the fibers in sodium carbonate solution for 10 hours and then washing and drying them; 2) Using hydrogen peroxide as an oxidizing agent and using hemicellulose and acetic acid as protective agents for the pretreated fibers, wherein The amount of hemicellulose added is 0.02 times the fiber mass, and the amount of acetic acid added is 0.01 times the fiber content. Calcium titanate is used as a catalyst to carry out an oxidation reaction to oxidize the hydroxyl groups on the macromolecular chains of natural fibers into more reactive aldehydes. 3) Utilize chitosan solution to process oxidized natural fibers, the amino groups on the chitosan molecules and the C=0 on the oxidized fiber molecules directly undergo a covalent cross-linking reaction, so that chitosan and natural fibers are fir...

Embodiment 2

[0031] The present embodiment carries out ginseng polysaccharide modification treatment on cotton fiber, comprises the following steps:

[0032] 1) Pretreating the natural fibers, soaking the fibers in sodium carbonate solution for 10 hours and then washing and drying them; 2) Using hydrogen peroxide as an oxidizing agent and using hemicellulose and acetic acid as protective agents for the pretreated fibers, wherein The amount of hemicellulose added is 0.03 times the fiber mass, the amount of acetic acid added is 0.03 times the fiber content, iron titanate is used as a catalyst to carry out oxidation reaction, and the hydroxyl group on the macromolecular chain of the natural fiber is oxidized to a more reactive aldehyde 3) Utilize chitosan solution to process oxidized natural fibers, the amino groups on the chitosan molecules and the C=0 on the oxidized fiber molecules directly undergo a covalent cross-linking reaction, so that chitosan and natural fibers are firmly combined ,...

Embodiment 3

[0034] This embodiment is to carry out the modified treatment of honeysuckle polysaccharide on wool, comprising the following steps:

[0035]1) Pretreat the wool by immersing the wool in a sodium carbonate solution for 10 hours before washing and drying; 2) Using ozone as the oxidizing agent and hemicellulose and acetic acid as the protective agent for the pretreated fiber, in which the hemicellulose The amount of cellulose added is 0.01 times of the fiber mass, the amount of acetic acid added is 0.01 times of the fiber content, and barium titanate is used as a catalyst to carry out oxidation reaction to oxidize the hydroxyl groups on the macromolecular chains of natural fibers into more reactive aldehyde groups ; 3) utilize chitosan solution to process oxidized natural fiber, the amino group on the chitosan molecule and the C=0 on the oxidized fiber molecule directly take place the covalent cross-linking reaction, make chitosan and natural fiber firmly combine together, Impro...

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PUM

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Abstract

The invention provides a preparation method of a functional polysaccharide antimicrobial modified natural fiber. The preparation method comprises the following steps: oxidizing a hydroxyl group on a macromolecular chain of the natural fiber into an aldehyde group with reactivity by taking ozone or hydrogen peroxide as an oxidizing agent and taking titanate as a catalyst; and treating an oxidized polysaccharide fiber with chitosan solution, and directly performing a covalent cross-linking reaction on an amino group on a chitosan molecule and C=0 on an oxidized fiber molecule, so that chitosan is firmly bound with the fiber, and the washing resistance is improved. Additionally, hemicellulose and acetic acid are also added as protective agents, so that the fiber can be prevented from being over oxidized, and the mechanical property of the fiber is reduced. The modified fiber has the advantages of being high in colourability, biological compatibility and natural antibacterial property, lowin production cost, friendly to environment and mild to skin.

Description

technical field [0001] The invention relates to a preparation method of functional polysaccharide composite fiber, which belongs to the technical field of functional fiber preparation. Background technique [0002] In recent years, with the enhancement of people's health and safety awareness, antibacterial textiles have been widely used in people's daily life. Chemical antibacterial agents are easy to cause environmental pollution and cause certain harm to human health, so using natural green substances to make textiles have antibacterial properties has become the first choice for antibacterial textiles, and it is also more and more popular. [0003] The chemical reagents commonly used in traditional chemical modification methods include acid and alkali solution treatment. Although the purpose of changing the fiber morphology and microstructure and improving fiber performance can be achieved, these chemical reagents will have adverse effects on the human body and cause serio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/76D06M11/34D06M11/50D06M15/03D06M13/256D06M101/12D06M101/06
CPCD06M11/34D06M11/50D06M11/76D06M13/256D06M15/03D06M16/00D06M2101/06D06M2101/12
Inventor 江军
Owner 江军
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