A source in the Russian Ministry of Education and Science said that scientists added zinc oxide and titanium nanoparticles to cotton fabric and obtained antibacterial cotton fabric.
It should be noted that nanoparticles of some metal oxides effectively suppress the vital activity of drug-resistant bacteria and fungi and, at the same time, are harmless to humans.
To increase the durability and stability of this antibacterial coating, the researchers used ultrasonic curing technology. Because this method ensures uniform distribution and spreading of nanoparticles over the surface, and also allows its wide application and low cost.
The researchers note that the addition of nanoparticles to cotton fabric did not change its consumer properties, and these nanoparticles can withstand at least 20 washing cycles.
The treated cotton fabric has been successfully tested on the outskirts of Hanoi, the capital of Vietnam, where high temperatures and humidity create favorable conditions for bacteria to thrive.
“The number of microorganisms on these tissues for three months was 30-100 times lower than in untreated tissues,” says Varvara Veselova, researcher at the Laboratory for Synthesis of Functional Materials and Processing of Mineral Raw Materials at the Institute of Inorganic General Chemistry. Microorganisms present on the fabrics during the test period indicated that unicellular fungi were the main cause of tissue deterioration in tropical climates, but zinc oxide was found to be an excellent fungicide as the treated fabric remained 20 percent stronger than raw fabric.
The researchers note that the processed cotton fabric can be used in the field of medicine and in the production of clothing.