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Antibacterial modified chitosan non-woven fabric and preparation method thereof

A non-woven, chitosan technology, applied in textiles and papermaking, biochemical fiber treatment, fiber treatment, etc., can solve the problem of chitosan having no bactericidal effect, and achieve the effect of good antibacterial effect and good bactericidal performance.

Inactive Publication Date: 2021-04-09
临泉县圣茂纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the antibacterial effect of chitosan non-woven materials is affected by many factors, such as the degree of deacetylation of chitosan, the ionic strength and pH of the solution, the type of bacteria, etc., especially in the physiological pH environment, chitosan has almost no bactericidal effect

Method used

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  • Antibacterial modified chitosan non-woven fabric and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0024] A kind of antibacterial modified chitosan nonwoven fabric, its preparation method comprises the steps:

[0025] S1. Add triethylamine and 2-bromoisobutyryl bromide sequentially into anhydrous tetrahydrofuran and stir to dissolve, wherein, the amount of triethylamine added is 6 mol% of 2-bromoisobutyryl bromide, configured as 2-bromoisobutyryl bromide Substitute isobutyryl bromide concentration is the solution of 0.1mol / L; Chitosan non-woven fabric (deacetylation degree ≥ 95%) is immersed in this solution according to bath ratio (g / mL) 1:30, under nitrogen protection, under 25 Take it out after shaking and reacting in a constant temperature water bath shaker at ℃ for 18 hours, wash it with tetrahydrofuran, and dry it in vacuum at room temperature to obtain a non-woven fabric grafted with bromoisobutyramide;

[0026] S2. Add N-vinylpyrrolidone into a mixed solvent of methanol and water with a volume ratio of 1:1.5 and stir to dissolve, then add the complex formed by mixin...

Embodiment 2

[0029] A kind of antibacterial modified chitosan nonwoven fabric, its preparation method comprises the steps:

[0030] S1. Add triethylamine and 2-bromoisobutyryl bromide sequentially into anhydrous tetrahydrofuran and stir to dissolve, wherein, the amount of triethylamine added is 1 mol% of 2-bromoisobutyryl bromide, configured as 2-bromoisobutyryl bromide Substitute isobutyryl bromide concentration is the solution of 0.1mol / L; Chitosan non-woven fabric (deacetylation degree ≥ 95%) is immersed in this solution according to bath ratio (g / mL) 1:30, under nitrogen protection, under 30 Take it out after shaking and reacting in a constant temperature water bath shaker at ℃ for 16 hours, wash it with tetrahydrofuran, and dry it in vacuum at room temperature to obtain a non-woven fabric grafted with bromoisobutyramide;

[0031] S2. Add N-vinylpyrrolidone into a mixed solvent of methanol and water with a volume ratio of 1:1 and stir to dissolve, then add the complex formed by mixing ...

Embodiment 3

[0034] A kind of antibacterial modified chitosan nonwoven fabric, its preparation method comprises the steps:

[0035] S1. Add triethylamine and 2-bromoisobutyryl bromide sequentially into anhydrous tetrahydrofuran and stir to dissolve, wherein, the amount of triethylamine added is 10mol% of 2-bromoisobutyryl bromide, configured as 2-bromoisobutyryl bromide Substitute isobutyryl bromide concentration is the solution of 0.1mol / L; Chitosan non-woven fabric (deacetylation degree ≥ 95%) is immersed in this solution according to bath ratio (g / mL) 1:30, under nitrogen protection, under 20 Take it out after shaking and reacting in a constant temperature water bath shaker at ℃ for 20 hours, wash it with tetrahydrofuran, and dry it in vacuum at room temperature to obtain a non-woven fabric grafted with bromoisobutyramide;

[0036] S2. Add N-vinylpyrrolidone into a mixed solvent of methanol and water with a volume ratio of 1:1.5 and stir to dissolve, then add the complex formed by mixin...

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Abstract

The invention provides an antibacterial modified chitosan non-woven fabric and a preparation method thereof. The preparation method comprises the steps that the chitosan non-woven fabric is immersed in a solution containing 2-bromo-isobutyryl bromide to be subjected to an amidation reaction, and a bromo-isobutyryl amide grafted non-woven fabric is obtained; the bromo-isobutyryl amide grafted non-woven fabric is immersed into a solution containing vinyl pyrrolidone for atom transfer radical polymerization reaction to obtain a non-woven fabric grafted with polyvinylpyrrolidone; and the non-woven fabric grafted with polyvinylpyrrolidone is immersed into an iodine-containing solution for complex reaction to obtain the antibacterial modified chitosan non-woven fabric. According to the antibacterial modified chitosan non-woven fabric and the preparation method thereof provided by the invention, polyvinylpyrrolidone is grafted on the surface of the chitosan non-woven fabric, and iodine and polyvinylpyrrolidone are complexed, so that the antibacterial property of the chitosan non-woven fabric is greatly improved.

Description

technical field [0001] The invention relates to the technical field of functional nonwoven fabrics, in particular to an antibacterial modified chitosan nonwoven fabric and a preparation method thereof. Background technique [0002] In daily life, people inevitably come into contact with various bacteria, fungi and other microorganisms. Some of the harmful microorganisms will multiply and grow rapidly under suitable conditions, and spread diseases through contact, affecting people's health. Therefore, inhibiting the growth and reproduction of microorganisms in daily life is of great significance to the antibacterial research of nonwoven fabrics. [0003] At present, antibacterial nonwovens are mainly produced by two methods: one is to directly use antibacterial fibers to prepare antibacterial nonwovens through nonwoven processes such as spunlace and acupuncture, and the other is to treat nonwovens with antibacterial finishing agents. To obtain antibacterial properties. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M14/06D06M15/356D06M11/09D06M13/188D06M101/10
CPCD06M11/09D06M13/188D06M14/06D06M15/3562D06M16/00D06M2101/10
Inventor 郭东东
Owner 临泉县圣茂纺织品有限公司
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