Obtaining, Structure, and Antimicrobial Properties of Nanocomposite Coatings Based on Polyurethane and Silver Nanoparticles

A new method of obtaining of antimicrobial coatings based on segmented polyurethanes and silver nanoparticles (SNP) stabilized by an ionic liquid is proposed. The effect of silver nanoparticles on the structure and characteristics of the obtained materials have been studied using X-ray scattering, electron microscopy, infrared spectroscopy, differential scanning calorimetry, and the microbiological method of diffusion in agar. It is established that in the polymer matrix, SNPs with sizes from 7 to 19 nm are formed, and their size depends on the content of the stabilizer. The obtained nanocomposite coatings exhibit high antimicrobial activity against bacteria (S. aureus, E. coli) and fungi (C. albicans).

Automated summary

A new method is proposed to obtain antimicrobial coatings based on segmented polyurethanes and silver nanoparticles stabilized by an ionic liquid. The influence of silver nanoparticles on the structure and characteristics of the materials was studied using various techniques. It was found that the size of the nanoparticles formed in the polymer matrix ranged from 7 to 19 nm, depending on the stabilizer content. The resulting nanocomposite coatings exhibited high antimicrobial activity against bacteria and fungi.