Natural antibacterial gauze and preparation method and application thereof

A natural antibacterial and gauze technology, applied in the medical field, can solve the problems of cumbersome preparation and high preparation cost, and achieve the effects of simplifying the process, good moisturizing performance, and promoting wound healing

Inactive Publication Date: 2019-12-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gauze has improved antibacterial properties, air permeability and water absorption performance, but the preparation method is cumbersome and the preparation cost is high

Method used

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  • Natural antibacterial gauze and preparation method and application thereof
  • Natural antibacterial gauze and preparation method and application thereof
  • Natural antibacterial gauze and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of preparation method of natural antibacterial gauze is as follows (its preparation process is as follows: figure 1 As shown, the schematic diagram of the structure is shown in figure 2 shown):

[0040] (1) Add chitosan into a 1000ml beaker filled with deionized water, and disperse evenly with an electric stirrer. % suspension; Utilize the single-platform planetary ball mill to grind, the grinding time is 3h, the rotating speed is 320rpm, the mass ratio of dry chitosan and agate beads is 1:60, and the mass fraction 1% chitosan nanofiber is obtained; Chitosan nanofibers and cellulose nano whiskers were diluted respectively (adding deionized water), and the dilution conditions were as follows: the rotating speed was 800rpm, the temperature was 25°C, and the time was 20min to obtain shells with a mass fraction of 0.5% respectively. The polysaccharide nanofiber suspension and the cellulose nanowhisker suspension with a mass fraction of 1%;

[0041] (2) soaking pu...

Embodiment 2

[0044] A kind of preparation method of natural antibacterial gauze is as follows:

[0045](1) Add chitosan into a 1000ml beaker filled with deionized water, and disperse evenly with an electric stirrer. % suspension, utilize single-platform planetary ball mill to grind, grinding time is 4h, rotating speed is 350rpm, the mass ratio of dry chitosan and agate beads is 1:60, obtains mass fraction 1% chitosan nanofiber; Chitosan nanofibers and cellulose nanowhiskers were diluted respectively, and the dilution conditions were as follows: the rotating speed was 800rpm, the temperature was 25°C, and the time was 30min to obtain a suspension of chitosan nanofibers with a mass fraction of 0.8%. And mass fraction is the cellulose nano whisker suspension of 1%;

[0046] (2) soaking pure cotton gauze in the chitosan nanofiber suspension of 0.8% by mass fraction for 20min, then taking out the pure cotton gauze and putting it into the temperature is 60 ℃ for drying to obtain chitosan nanofi...

Embodiment 3

[0049] A kind of preparation method of natural antibacterial gauze is as follows:

[0050] (1) Add chitosan into a 1000ml beaker filled with deionized water, and disperse evenly with an electric stirrer. % suspension, utilize single platform planetary ball mill to grind, grinding time is 5h, rotating speed is 380rpm, the mass ratio of dry chitosan and agate beads is 1:60, obtains mass fraction 1% chitosan nanofiber; Dilute chitosan nanofibers and cellulose nanowhiskers respectively, and the dilution conditions are as follows: the rotating speed is 800rpm, the temperature is 25°C, and the time is 40min to obtain a suspension of chitosan nanofibers with a mass fraction of 0.8%. And mass fraction is the cellulose nano whisker suspension of 0.8%;

[0051] (2) soaking pure cotton gauze in the chitosan nanofiber suspension of 0.8% by mass fraction for 20min, then taking out the pure cotton gauze and putting it into temperature is 80 ℃ for drying to obtain the chitosan nanofiber con...

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Abstract

The invention discloses natural antibacterial gauze and a preparation method and application thereof. The method comprises the following steps of (1) adding chitosan to water, performing uniform stirring and dispersing, then performing grinding, and adding water for diluting to obtain chitosan nanofiber suspension; (2) enabling cellulose nanometer crystal whiskers to disperse in water to obtain cellulose nanometer crystal whisker suspension; (3) soaking the gauze in the chitosan nanofiber suspension, performing taking out, and performing drying to obtain the gauze containing chitosan nanofibers; (4) immersing the gauze containing chitosan nanofibers in the cellulose nanometer crystal whisker suspension, performing taking out, and performing drying to obtain the gauze containing chitosan and cellulose nanometer crystal whiskers; and (5) ending the step (4), or repeating the steps (1) to (4) to obtain the natural antibacterial gauze. The obtained gauze can realize slow release of an antibacterial agent so as to prolong the antibacterial effectiveness, wound healing is facilitated, and the natural antibacterial gauze has anti blocking function and can be applied to the antibacterial field for medical care.

Description

technical field [0001] The invention belongs to the medical field, in particular to a natural antibacterial gauze and its preparation method and application. Background technique [0002] In reality, we are often accompanied by various harmful microorganisms, which are ubiquitous and exist in every corner of life, such as bacteria such as Escherichia coli, Clostridium tetani and Staphylococcus aureus. When the human skin is traumatized by various external factors, the human body loses its natural protective barrier, and the tissues in the body are infected by various bacterial invasions, which may even threaten life. Due to its excellent characteristics, medical gauze can largely prevent microorganisms from entering wound tissue, facilitate wound protection, and promote rapid wound healing. However, the gauze we use in daily life is generally made of pure cotton or hemp fiber. Although it has the advantages of cheap price and convenient use, it not only does not have antiba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/02
CPCA61F13/02
Inventor 王斌葛洲李金鹏陈克复
Owner SOUTH CHINA UNIV OF TECH
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