Qingdao University "weaves" anti-germ drugs into masks

Release time:

2022-01-10

Recently, the research team of the Institute of Biomedical Materials and Engineering of Qingdao University designed and synthesized a new type of polytetrahydropyrimidine antibacterial and antiviral polymer (PTHP), which was mixed with polyacrylonitrile (a common material for making masks) through electrospinning process to prepare nanofibers with good tensile strength. The results were recently published in the Journal of Hazardous Materials.

With the outbreak of the new crown epidemic, protective equipment such as masks has become a necessity in people's lives. Daily use of masks are mostly by electrostatic adsorption to intercept bacteria, interception efficiency is limited, and used masks due to "covered" bacteria, but also need special treatment. Can "intercept" be changed to "inhibit" and "kill?

The research team's newly developed antibacterial and antiviral nanofibers can be "woven" into a nanofiber layer, covering the outer layer of the mask, so that the mask has a "self-cleaning" effect of inhibiting germs, and has a better protective effect than the existing mask.

Team leader Guo Shuaibing introduced that their large number of experimental results show that this nanofiber not only exhibits an efficient and lasting inhibitory effect (>99.999) on common bacteria such as Escherichia coli and Staphylococcus aureus, but also exhibits excellent effects on some viruses. Killing performance. Moreover, this fiber has good thermal stability and biocompatibility, that is, the drug does not volatilize after heating, does not cause harm to the human body, and has good safety. In addition, the nano fiber mesh is very small, and the filtering effect of 0.24 micron particles is as high as 97%, which greatly improves the interception effect of the mask on the particles.

It is understood that this nanofiber as a pathogen killing layer can not only be applied to masks, but also can be used for other cutting-edge medical textiles, and the relevant research results have applied for national invention patents.

Natural hygiene products: continuous innovation

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January-October 2021 China Industrial Textile Industry Operation Profile

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