Technology for imparting antibacterial properties to non-woven textiles

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• Antibacterial drugs and materials

2022: Creation of technology for imparting antibacterial properties to textiles

Scientists of NUST "MISIS" together with colleagues from other Russian universities have created a technology for imparting antibacterial properties to nonwoven textile materials. This was reported to Zdrav.Expert on March 17, 2022 by representatives of MISIS.

The technology is based on the modification of materials due to the use of gas-discharge radio-frequency plasma at low pressures. According to the authors, this method will find wide application in medicine. The study is published in the journal Materials Letters.

Antibacterial textiles in the hands of a graduate of iphd "Biomaterial Science" NUST "MISIS" Ilya Larin

The study, aimed at imparting antibacterial properties to nonwoven textiles, started simultaneously with the beginning of the COVID-19 pandemic.

It is known that in patients with a severe form COVID-19 it weakens, immunity this contributes to the development of secondary bacterial infections in them. Therefore, scientists set themselves the task of creating a material with a bacteriostatic effect for the manufacture of disposable medical, clothes sheets, diapers and other products. According to their calculations, the use of such materials would help to contain the spread of pathogenic bacteria in hospital conditions.

"To impart antibacterial properties to the nonwoven fabric, it was previously placed in a closed system between the two electrodes. In it, air was evacuated to the values ​ ​ of the average vacuum, and at the same time argon was supplied to the system. When creating an electromagnetic field, it accelerated from cathode to anode and "bombarded" the product, thereby breaking the molecular bonds of the polymer composition. The functionalized surface was then impregnated with antibacterial agents, immersing it in a reservoir with suspensions of a concentrate of a colloidal solution of silver nanoparticles, "said Ilya Larin, one of the authors of the study, a graduate of iphd" Biomaterialology "NUST MISIS.

Thereafter, the material with antibacterial properties was treated with a methane-argon mixture. Methane is included as a monomer in many polymers, it was used as building blocks on the surface of a nonwoven fabric, tying antibacterial agents to the surface. The articles were then autoclaved.

In the future, scientists plan to use radio-frequency gas-discharge plasma in the manufacture of composite materials, increasing their physical, mechanical and operational properties.

Employees of Kazan National Research Technological University, Skolkovo Institute of Science and Technology and N.N. Blokhin National Medical Research Center of Oncology also took part in the work. The study was conducted as part of the Priority-2030 program.