Polytetrafluoroethylene (PTFE) membrane is an excellent filter material with good chemical stability, temperature resistance, low friction coefficient and other characteristics. PTFE membrane can be used to filter bacteria after special treatment. The following will analyze the filtration principle of polytetrafluoroethylene membrane and the filtration effect of PTPE membrane on bacteria.
1. Filtration principle of PTFE membrane
PTFE membrane The filtration principle is based on the screening effect of micropores. During the preparation process of the PTFE membrane, a large number of microporous structures will be formed. These pores are uniform in size and densely distributed, and the pore size can be controlled in the range of 0.1-5 microns. When liquid or gas flows through the PTFE membrane, under the filtering action of the micropores, particles or microorganisms larger than the pore size are trapped on the surface of the membrane, while particles smaller than the pore size pass through the PTFE membrane and are discharged through the channels inside the membrane.
2. The filtration effect of PTFE membrane on bacteria
Due to the micropores of PTFE membrane The structure is very small, so its filtering effect on bacteria is also very significant. It can be concluded from experimental data that PTFE membrane is very effective in filtering bacterial cells. For example, for the filtration of bacteria (such as E. coli), a PTFE membrane with a pore size of 0.2 micron is generally used. This membrane can not only exclude 99.9% of E. coli, but also filter out viruses and other microorganisms and their toxins.
In addition, PTFE film has other advantages, such as good biocompatibility, corrosion resistance and Wear resistance; smooth surface, easy to clean, etc. Therefore, it is widely used in food processing, pharmaceutical production and other fields. As a good filter material, PTFE membrane performs well in bacterial filtration. The filtration principle of PTFE membrane is based on the screening effect of microporous structure, and can well remove microorganisms such as bacteria and viruses and their toxins. Interested parties are welcome to enter the store and contact us.
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