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Long-lasting antibacterial chitosan modified oxidized cellulose fabric and preparation method thereof

A technology for modifying oxidized cellulose and chitosan, which is applied in fiber treatment, plant fiber, physical treatment, etc. It can solve the problems of high requirements for process equipment, complicated preparation of finishing agents, and various components of finishing liquid, and achieves washing resistance Good performance, easy to recycle and reuse, and the effect of accelerating the speed of heat movement

Inactive Publication Date: 2019-02-01
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cotton fabric modified by trimethoxybenzoyl chitosan disclosed in the invention patent CN106521950A uses trimethoxybenzoyl chitosan to exert antibacterial and anti-ultraviolet effect, and uses organic polycarboxylic acid and amino silicone oil emulsion as crosslinking agents to improve The chemical crosslinking of chitosan and cotton fabric can improve the antibacterial, anti-shrinkage and anti-wrinkle, anti-ultraviolet and other multiple functions of cotton fabric. Baking and high-temperature baking require high process equipment

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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  • Long-lasting antibacterial chitosan modified oxidized cellulose fabric and preparation method thereof
  • Long-lasting antibacterial chitosan modified oxidized cellulose fabric and preparation method thereof
  • Long-lasting antibacterial chitosan modified oxidized cellulose fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Dry chitosan with a viscosity-average molecular weight of 300,000 and a deacetylation degree of 92.4% at 85°C for 3 hours, then add it to 1-allyl-3-methylimidazolium chloride salt ionic liquid and continue at 100°C Stir for 3 hours to dissolve the chitosan, and obtain a chitosan / 1-allyl-3-methylimidazolium chloride ionic liquid solution with a mass concentration of 0.8%;

[0032] (2) Immerse the desizing and scouring cotton fabric at room temperature into a NaOH solution with a mass concentration of 9%, microwave-assisted treatment for 2min (microwave power is 156W), and then wash with deionized water to neutrality to obtain The cotton fabric of microwave synergistic alkali pretreatment; Press bath ratio 1:50, add the cotton fabric of microwave synergistic alkali treatment in the sodium periodate solution of 1g / L, continue dripping ethylene glycol simultaneously (make ethylene glycol at high The mass concentration in sodium iodate solution is 10%), carry out selecti...

Embodiment 2

[0035] (1) Dry chitosan with a viscosity-average molecular weight of 300,000 and a degree of deacetylation of 92.4% at 90°C for 2 hours, then add it to 1-ethyl-3-methylimidazolium acetate ionic liquid, and dry it at 95°C Continue stirring for 2 hours to dissolve the chitosan, and obtain a chitosan / 1-ethyl-3-methylimidazolium acetate ionic liquid solution with a mass concentration of 1.2%;

[0036] (2) Immerse the desizing and scouring cotton fabric at room temperature into a NaOH solution with a mass concentration of 12%, microwave-assisted treatment for 2min (microwave power is 212W), and then wash with deionized water to neutrality to obtain The cotton fabric of microwave synergistic alkali pretreatment; Press bath ratio 1:50, add the cotton fabric of microwave synergistic alkali treatment in the sodium periodate solution of 2g / L, continue dripping glycerol simultaneously (make glycerol at high The mass concentration in sodium iodate solution is 12%), carry out selective oxi...

Embodiment 3

[0039] (1) Dry chitosan with a viscosity-average molecular weight of 300,000 and a degree of deacetylation of 92.4% at 95°C for 2 hours, then add it to 1-butyl-3-methylimidazolium acetate ionic liquid, and dry it at 100°C Continue stirring for 2 hours to dissolve the chitosan, and obtain a chitosan / 1-butyl-3-methylimidazole acetate ionic liquid solution with a mass concentration of 1%.

[0040] (2) Immerse the viscose fabric through desizing and scouring at room temperature into a NaOH solution with a mass concentration of 10%, microwave-assisted treatment for 2min (microwave power is 128W), and then wash to neutral with deionized water to prepare Obtain the viscose fabric of microwave synergistic alkali pretreatment; Press bath ratio 1:50, add the viscose fabric of microwave synergistic alkali treatment in the sodium periodate solution of 1.5g / L, continue dripping propylene glycol simultaneously (make propylene glycol at high The mass concentration in the sodium iodate soluti...

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Abstract

The invention discloses a long-lasting antibacterial chitosan modified oxidized cellulose fabric and a preparation method thereof. The long-lasting antibacterial chitosan modified oxidized cellulose fabric is obtained through a nucleophilic addition reaction of an amino group in a chitosan molecule and an aldehyde group in a selectively oxidized cellulose fabric. The chitosan modified oxidized cellulose fabric prepared in the invention has long-lasting and efficient antibacterial activity and good wearability, has good affinity to human bodies, is safe and hygienic, and overcomes the negativeinfluences of a chemical cross-linking agent used in conventional chitosan modification on the excellent properties of cellulosic fabric and the health of the human bodies, so the long-lasting antibacterial chitosan modified oxidized cellulose fabric has an actual application prospect.

Description

technical field [0001] The invention relates to a long-lasting antibacterial chitosan modified oxidized cellulose fabric and a preparation method thereof, belonging to the technical field of antibacterial finishing of cellulose fabrics. Background technique [0002] Cellulose products are favored by people because of their good human affinity, comfortable wearing, moisture absorption and breathability, wide range of sources, renewable and easy biodegradation. However, in the process of use, due to the large specific surface area and strong hygroscopicity of cellulose fabrics, suitable conditions are created for the reproduction and spread of microorganisms, which not only cause mechanical damage to the fabrics, mildew, stains and fading, and produce people. Unpleasant odors can even cause the spread of diseases and pose a threat to human health. Entering the 21st century, with the raging viruses such as SARS, bird flu, H1NI influenza and people's increasing attention to hyg...

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 Applications(China)
IPC IPC(8): D06M15/03D06M10/06D06M101/06
CPCD06M10/06D06M15/03D06M2101/06
Inventor 许云辉郑宏飞杨晓娜黄小军吴娜韦志
Owner ANHUI AGRICULTURAL UNIVERSITY
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