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Preparation method for anti-virus bacteria cellulose protective material and product thereof

A technology of bacterial cellulose and bacterial cellulose film is applied in the field of preparation of medical protective materials, which can solve the problems of low air permeability and poor comfort, and achieve the effects of simple production process, improved air permeability, and increased spectral antibacterial properties.

Inactive Publication Date: 2012-01-18
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aperture of the mask made by this method is too small, the air permeability is low, and the comfort is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Place the bacterial cellulose film produced by Acetobacter xylinum in 50°C, a mass concentration of 1% NaOH solution, heat for 20 minutes, then use deionized water and mass concentration of 0.1% H 2 SO 4 The solution solution is repeatedly washed, and when the pH of the wet film is 7.0, the washing is stopped to obtain a bacterial cellulose wet film, and the water content of the bacterial cellulose wet film is determined to be 90%;

[0045] (2) the bacterial cellulose wet film is cut into 1cm 2 ~4cm 2 The small pieces of the bacteria cellulose wet film and water are placed in the homogenizer in proportion, and the rotating speed is 5000r / min, and an emulsion is formed in 2 minutes. The ratio refers to the bacterial cellulose dry weight and The mass ratio of water is 1:20;

[0046] (3) The water-soluble polymer additive polyvinyl alcohol (molecular weight is about 25,000, and the degree of polymerization is 500) is made into a solution with a mass concentration of...

Embodiment 2

[0052] (1) Place the bacterial cellulose membrane produced by Acetobacter xylinum in 100°C, a mass concentration of 10% NaOH solution, heat for 60 minutes, and then use deionized water and mass concentration of 1% H 2 SO 4 The solution solution is repeatedly washed, and when the pH of the wet film is 7.2, the washing is stopped to obtain a bacterial cellulose wet film, and the water content of the bacterial cellulose wet film is determined to be 90%;

[0053] (2) the bacterial cellulose wet film is cut into 1cm 2 ~4cm 2 The small pieces of bacterial cellulose wet film and water are placed in the homogenizer in proportion, and the rotating speed is 10000r / min for 5 minutes to form an emulsion. The ratio refers to the dry weight of bacterial cellulose and The mass ratio of water is 1:100;

[0054] (3) The water-soluble polymer additive polyvinyl alcohol (molecular weight is about 150,000, and the degree of polymerization is 2000) is made into a solution with a mass concentrat...

Embodiment 3

[0060] (1) Place the bacterial cellulose membrane produced by Acetobacter acetogenes at 50° C. in a KOH solution with a mass concentration of 1%, heat for 20 minutes, then rinse repeatedly with deionized water and a 0.1% HCl solution solution, When the pH of the wet film was 7.0, the flushing was stopped to obtain a bacterial cellulose wet film, and the water content of the bacterial cellulose wet film was determined to be 90%;

[0061] (2) the bacterial cellulose wet film is cut into 1cm 2 ~4cm 2 The small pieces of the bacteria cellulose wet film and water are placed in the homogenizer in proportion, and the rotating speed is 5000r / min, and an emulsion is formed in 2 minutes. The ratio refers to the bacterial cellulose dry weight and The mass ratio of water is 1:20;

[0062] (3) The water-soluble polymer additive polyvinyl alcohol (molecular weight is about 25,000, and the degree of polymerization is 500) is made into a solution with a mass concentration of 0.5%;

[0063]...

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Abstract

The invention belongs to the field of medical materials, and relates to a preparation method for an anti-virus bacteria cellulose protective material and a product thereof, in particular to a preparation method for a medical protective material which takes bacteria cellulose as a substrate and a product thereof. In the invention, pulping treatment is performed and polyvinyl alcohol (PVA) is added, so that the air permeability of the protective material can be effectively improved, the effective pore diameter is appropriately increased, random, interlayer and intersected arrangement of fiber is increased to construct a multi-bent fiber filtering layer, and bacteria, viruses and the like are prevented from permeating the compound film easily. The concentration of the adopted PVA is lower and the using amount is smaller, and the effective pore diameter of the compound film is increased and the mechanical performance of the compound film is improved by taking the three-dimensional netlike structure of bacteria cellulose as a main body and adding the PVA serving as a bonding agent. Moreover, the bacteria cellulose-base protective material with an anti-virus function is prepared by compounding chitosan which has broad spectrum antibiotic property, is non-toxic and is free from side effect.

Description

technical field [0001] The invention belongs to the field of medical materials, and relates to a preparation method of an anti-virus bacterial cellulose protective material and a product thereof, in particular to a preparation method of a medical protective material with bacterial cellulose as a base material and a product thereof. Background technique [0002] As we all know, the route of infection of most viruses and bacteria is through direct droplet infection and indirect contact infection (hands touch the mouth, nose or eyes after touching the mouth foam with pathogens). Masks are one of the most common means of protection. Medical protective masks are often made of non-woven fabrics, and the pores between the fibers are relatively large, which is not effective in filtering bacteria and viruses. The fiber diameter of commonly used masks is 15-25 μm, the fiber diameter is relatively thick, its barrier efficiency is low, and the surface is easy to absorb moisture, which ...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08J9/28C08L1/02C08L29/04C08L5/08A41D13/11
Inventor 张雯王华平陈仕艳周碧辉张泽锐李哲张万灵
Owner DONGHUA UNIV
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