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Antibacterial chitosan gauze and manufacturing method thereof

A manufacturing method and chitosan technology, applied in textiles, papermaking, fiber treatment, etc., can solve the problems of poor spinnability of chitosan fibers, poor fabric durability, affecting fabric hand feeling, etc., and achieve no effect on dyeing uniformity, enhanced Color fastness, the effect of low product price

Inactive Publication Date: 2011-07-27
安徽甲特生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly several researches on the antibacterial function of chitosan in textiles: one is to use chitosan's fiber-forming properties to spin chitosan fibers and make various fabrics, but chitosan fibers have poor spinnability and are expensive. Still can't meet the needs of popularization; the second is to use high molecular weight chitosan degradation solution to finish the fabric by direct padding. Although this method is simple in process, it affects the fabric feel; After-finishing the fabric by direct padding, although this method solves the problem of hand feeling, the durability of the fabric is poor

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

[0021] Embodiment 1: choose the medical grade chitosan 3g that deacetylation degree is 90%, average molecular weight is 3000, cross-linking agent epichlorohydrin 0.1g, add water 96.9g, after being made into solution, then solution is according to volume ratio: Dilute with water at a ratio of 1:80 to make a chitosan multifunctional finishing agent; the mass ratio of dodecyldimethylbenzyl ammonium chloride to water is 0.5:100, and adjusted with 0.5mol / L KOH solution An alkaline surfactant solution with a pH of 9. The technical process steps are: heat the chitosan multi-functional finishing agent to 25°C, soak the ordinary gauze in the solution for 10 minutes, roll the soaked gauze, the excess rate is 90%, and then remove the uncoated gauze. The absorbed chitosan functional finishing agent and the removed chitosan multifunctional finishing agent can be recycled; the gauze after the dehydration treatment is dried at 130°C, and then the dried gauze is placed on the prepared alkalin...

Embodiment 2

[0022] Embodiment 2: choose deacetylation degree and be 95%, average molecular weight is 0.8g of medical grade chitosan of 5000, cross-linking agent epichlorohydrin 1g, add 98.2g water, after being made into solution, then solution is according to volume ratio Dilute it with water at a ratio of 1:120 to make a chitosan multifunctional finishing agent; make the mass ratio of dodecyldimethylbenzyl ammonium chloride to water 3:100, and use 2mol / L NaCO 3 The solution was adjusted to a pH 11 alkaline surfactant solution. The technical process steps are: heat the chitosan multi-functional finishing agent at 40°C, soak the ordinary gauze in the solution for 2 minutes, roll the soaked gauze, the rolling rate is 70%, and then remove the unabsorbed gauze. chitosan functional finishing agent, the removed chitosan multifunctional finishing agent can be recycled; the gauze after the dehydration treatment is dried at 90 ℃, and then the dried gauze is placed on the prepared alkaline surface ...

Embodiment 3

[0023] Embodiment 3: choose the medical grade chitosan 1.5g that deacetylation degree is 92%, average molecular weight is 4000, crosslinking agent epichlorohydrin 0.5g, 98g water, after being made into solution, then solution is according to volume ratio The ratio of 1:100 is diluted with water to make chitosan multifunctional finishing agent; the mass ratio of dodecyldimethylbenzyl ammonium chloride to water is 0.5:100, and NaHCO of 1mol / L 3 The solution was adjusted to a pH of 10 with an alkaline surfactant solution. The technical process steps are: heat the chitosan multi-functional finishing agent at 35°C, soak the ordinary gauze in the solution for 5 minutes, roll the soaked gauze, the rolling rate is 80%, and then remove the unabsorbed gauze. chitosan functional finishing agent, the removed chitosan multifunctional finishing agent can be recycled; the gauze after the dehydration treatment is dried at 110 ℃, and then the dried gauze is placed on the prepared alkaline surf...

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 antibacterial chitosan gauze and a manufacturing method thereof, belonging to the technical field of antibacterial chitosan gauze manufacturing. The manufacturing method is technically characterized by comprising the following steps of: preparing chitosan, a crosslinking agent and water into a solution, adding water to dilute the solution, and preparing into a multifunctional chitosan finishing agent; preparing a cationic surfactant and water into a cationic surfactant solution, and adding a pH adjuster to adjust the pH value of the cationic surfactant solution to 9-11; heating the multifunctional chitosan finishing agent to 25-40 DEG C, immersing common gauze in the solution, rolling the immersed gauze, dehydrating the rolled gauze, and performing primary drying;immersing the dried gauze in an alkaline surfactant solution, maintaining the temperature at 25-40 DEG C, rolling the immersed gauze, removing the alkaline surfactant solution, and performing stentering formation and secondary drying. The antibacterial chitosan gauze has the advantages of good antibacterial action, small investment to production equipment, simple process and no influence on dyeing uniformity.

Description

technical field [0001] The invention relates to a chitosan antibacterial functional gauze and a manufacturing method thereof. Background technique [0002] Chitosan [(1,4)-2-amino-2-deoxy-β-D glucan] is a chitin [(1,4)-2-acetylamino-2-deoxy-β-D glucan ] The natural biological polysaccharide molecule made by removing the acetyl group by alkali treatment is the only basic aminopolysaccharide among natural polysaccharides, and it is a renewable resource. Its structure contains a large number of hydroxyl groups and free amino groups, which has unique physiological activities and superior functional effects, which can improve the body's immunity and enhance the body's anti-infection ability. In addition, chitosan through the positively charged NH 3 + Adsorb the negatively charged cell wall, make chitosan adsorb on the surface of the cell membrane to form a layer of polymer membrane, change the selective permeability of the cell membrane, prevent the transport of nutrients into...

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): D06M15/03D06M13/11D06M13/463
Inventor 李玲赵凤
Owner 安徽甲特生物科技有限公司
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