Air filter type bacterial cellulose mask and production method thereof

Abstract

The invention discloses an air filter type bacterial cellulose mask and a production method thereof. The mask is made of dried bacterial cellulose which is used as a mask frame material. The preparation method comprises the following steps: selecting acetobacter xylinum as a type strain, and culturing the acetobacter xylinum to obtain a bacterial cellulose membrane; and after soaking the membrane in acid liquor and alkali liquor, washing the soaked membrane till the rate of impurities is less than 0.5 percent, soaking the membrane in nano-silver solution, then drying the membrane by adopting a freeze drying mode, and obtaining the air filter type bacterial cellulose mask through compound preparation. The preparation process is simple, the filter performance of the mask can be effectively improved by using the bacterial cellulose as a material, and the bactericidal and antitoxic capacities of the mask are enhanced by soaking in the nano-silver solution; and the mask has the characteristics of low production cost, strong adsorption capacity, high bactericidal activity, long durative bactericidal time and the like, and can effectively reduce resource consumption and protect ecological environment.

Description

technical field [0001] The invention relates to an air-filtering bacterial cellulose mask and a production method thereof, belonging to the technical field of bioengineering. Background technique [0002] A mask is an artificial device that can cover the human face and prevent substances of specific specifications and properties from directly contacting the human respiratory system. [0003] As we all know, in various diseases that human beings suffer from, the air is used as the medium of transmission, and the mouth, nose and other respiratory organs are used as the transmission route to spread and infect. The Great Influenza caused nearly 50 million deaths. We now know that this was caused by a wild outbreak of microbes. Based on this, people realized that wearing masks should be able to effectively prevent and control certain airborne diseases. [0004] However, due to the different types of microorganisms, the prevention and control of different microorganisms has dif...

AI Technical Summary

Problems solved by technology

[0006] 1. The increase in the number of filter layers not only increases the net weight of the mask, but also reduces the air mass transfer capacity of the mask, which can easily cause excessive local temperature on the face, and more prone to sweating, poor breathing, hypoxia, heatstroke and other malignant conditions

[0007] 2. The process of adsorbing impurities on the filter layer is a reversible adsorption-desorption process. When the adsorption capacity reaches a certain level, although its adsorption capacity does not change significantly, its analytical capacity will increase greatly at the same time, so the desorbed impurities at this time It is very likely to enter the human respiratory system through the filter material, causing secondary pollution.

[0009] At present, although some people propose to use methods such as loading drug sheaths to improve the masks, they are all difficult to market because of the high cost.