Avaliação do tratamento antimicrobiano com nanopartículas de prata aplicadas em substratos têxteis

Abstract

The change in daily habits due to the SARS-Cov-2 virus pandemic has led to the search for new commercial applications of technologies that aim to minimize viral contamination and dissemination. In this context, nanotechnology and the textile industry can be great allies in combating viruses and bacteria, aiming at new technologies against pandemic vectors. An interesting front is the combination of textiles and silver nanoparticles (NPs), this particles have antimicrobial action against about 650 pathogenic microorganisms. This work aims to evaluate the antimicrobial treatment of silver nanoparticles from a commercial source, applied directly in the polymerization of polyamide and, by impregnation via foulard in polyester using the pad-dry-cure technique for functionalization. The characterizations of the textile substrate with nanoparticles were performed through visual analysis, Ultraviolet Visible Spectroscopy (UVVis) and techniques such as Scanning Electron Microscopy (SEM), Plasma Optical Emission Spectrometry (ICP-OES). The silver nanoparticles had an average size of 25 nm and, in all tests the incorporation was satisfactory, showing the presence of silver nanoparticles after application through the ICP-OES analysis. Preliminary microbiological analyzes showed the effectiveness of the antimicrobial treatment, with results up to 99.99% reduction. Antiviral analysis was performed for application via in situ polymerization, which had a result of 2 Logs = 99% inactivation, in the SARS-Cov-2 strain, showing the potential of silver nanoparticles. The study revealed the effectiveness of the application of nanoparticles in textiles.