Antibacterial properties of polypyrrole-treated fabrics by ultrasound deposition

Diego Omar Sanchez Ramirez, Alessio Varesano, Riccardo Andrea Carletto, Claudia Vineis, Ilana Perelshtein, Michal Natan, Nina Perkas, Ehud Banin, Aharon Gedanken

Research output: Contribution to journalArticlepeer-review


Antimicrobial textiles can contribute to the fighting against antibiotic resistance pathogenic microorganisms. Polypyrrole is a conjugated polymer that exerts a biocidal action thanks to positive charges on its backbone chain produced during it synthesis. In this work, dispersions of stable polypyrrole nanoparticles were produced by chemical oxidative polymerization at room temperature in water. An ultrasound-assisted coating process was then used to effectively treat a polyester fabric with the nanoparticles to obtain an optimal antibacterial coating which efficiently eradicates the bacteria. The results showed that the treated fabric with about 4 g/m2 of polypyrrole had log bacteria reductions of 6.0 against Staphylococcus aureus and 7.5 against Escherichia coli. The combination of a polypyrrole synthesis in the form of water nanoparticles dispersions and a continuous coating of fabrics supported by ultrasound overcomes some issues of upscaling of the traditional in-situ chemical deposition used until now for the production of polypyrrole-coated textiles.

Original languageEnglish
Pages (from-to)164-170
Number of pages7
JournalMaterials Science and Engineering C
StatePublished - Sep 2019


  • Antibacterial fabric
  • Conjugated polymer
  • Nanoparticle
  • Sonochemical coating
  • Ultrasound

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Science(all)


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