Petr Slepička1, Silvie Rimpelová2, Nikola Slepičková Kasálková1, Dominik Fajstavr1, Petr Sajdl3, Zdeňka Kolská4, Václav Švorčík1. 1. Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic. 2. Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic. 3. Department of Power Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic. 4. Faculty of Science, J. E. Purkyně University in Ústí nad Labem, 400 96 Ústí nad Labem, Czech Republic.
Abstract
This article is focused on the evaluation of surface properties of polytetrafluoroethylene (PTFE) nanotextile and a tetrafluoroethylene-perfluoro(alkoxy vinyl ether) (PFA) film and their surface activation with argon plasma treatment followed with silver nanoclusters deposition. Samples were subjected to plasma modification for a different time exposure, silver deposition for different time periods, or their combination. As an alternative approach, the foils were coated with poly-L-lactic acid (PLLA) and silver. The following methods were used to study the surface properties of the polymers: goniometry, atomic force microscopy, and X-ray photoelectron microscopy. By combining the aforementioned methods for material surface modification, substrates with antibacterial properties eliminating the growth of Gram-positive and Gram-negative bacteria were prepared. Studies of antimicrobial activity showed that PTFE plasma-modified samples coated with PLLA and deposited with a thin layer of Ag had a strong antimicrobial effect, which was also observed for the PFA material against the bacterial strain of S. aureus. Significant antibacterial effect against S. aureus, Proteus sp. and E. coli has been demonstrated on PTFE nanotextile plasma-treated for 240 s, coated with PLLA, and subsequently sputtered with thin Ag layer.
This article is focused on the evaluation of surface properties of n class="Chemical">polytetrafluoroethylene (PTFE) nanotextile and a tetrafluoroethylene-perfluoro(alkoxy vinyl ether) (PFA) film and their surface activation with argon plasma treatment followed with silver nanoclusters deposition. Samples were subjected to plasma modification for a different time exposure, silver deposition for different time periods, or their combination. As an alternative approach, the foils were coated with poly-L-lactic acid (PLLA) and silver. The following methods were used to study the surface properties of the polymers: goniometry, atomic force microscopy, and X-ray photoelectron microscopy. By combining the aforementioned methods for material surface modification, substrates with antibacterial properties eliminating the growth of Gram-positive and Gram-negative bacteria were prepared. Studies of antimicrobial activity showed that PTFE plasma-modified samples coated with PLLA and deposited with a thin layer of Ag had a strong antimicrobial effect, which was also observed for the PFA material against the bacterial strain of S. aureus. Significant antibacterial effect against S. aureus, Proteus sp. and E. coli has been demonstrated on PTFE nanotextile plasma-treated for 240 s, coated with PLLA, and subsequently sputtered with thin Ag layer.
Authors: C Adlhart; J Verran; N F Azevedo; H Olmez; M M Keinänen-Toivola; I Gouveia; L F Melo; F Crijns Journal: J Hosp Infect Date: 2018-02-02 Impact factor: 3.926
Authors: Sh Sohrabnezhad; A Pourahmad; M J Mehdipour Moghaddam; A Sadeghi Journal: Spectrochim Acta A Mol Biomol Spectrosc Date: 2014-10-28 Impact factor: 4.098
Authors: Olha Bazaka; Karthika Prasad; Igor Levchenko; Mohan V Jacob; Kateryna Bazaka; Peter Kingshott; Russell J Crawford; Elena P Ivanova Journal: Molecules Date: 2021-11-25 Impact factor: 4.411