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KrF Laser and Plasma Exposure of PDMS-Carbon Composite and Its Antibacterial Properties.
Fajstavr, Dominik; Frýdlová, Bára; Rimpelová, Silvie; Kasálková, Nikola Slepicková; Sajdl, Petr; Svorcík, Václav; Slepicka, Petr.
Afiliación
  • Fajstavr D; Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
  • Frýdlová B; Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
  • Rimpelová S; Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
  • Kasálková NS; Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
  • Sajdl P; Department of Power Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
  • Svorcík V; Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
  • Slepicka P; Faculty of Mechanical Engineering, J. E. Purkyne University, 400 96 Usti nad Labem, Czech Republic.
Materials (Basel) ; 15(3)2022 Jan 22.
Article en En | MEDLINE | ID: mdl-35160785
A polydimethylsiloxane (PDMS) composite with multi-walled carbon nanotubes was successfully prepared. Composite foils were treated with both plasma and excimer laser, and changes in their physicochemical properties were determined in detail. Mainly changes in surface chemistry, wettability, and morphology were determined. The plasma treatment of PDMS complemented with subsequent heating led to the formation of a unique wrinkle-like pattern. The impact of different laser treatment conditions on the composite surface was determined. The morphology was determined by AFM and LCM techniques, while chemical changes and chemical surface mapping were studied with the EDS/EDX method. Selected activated polymer composites were used for the evaluation of antibacterial activity using Gram-positive (Staphylococcus epidermidis) and Gram-negative (Escherichia coli) bacteria. The antibacterial effect was achieved against S. epidermidis on pristine PDMS treated with 500 mJ of laser energy and PDMS-C nanocomposite treated with a lower laser fluence of 250 mJ. Silver deposition of PDMS foil increases significantly its antibacterial properties against E. coli, which is further enhanced by the carbon predeposition or high-energy laser treatment.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: República Checa Pais de publicación: Suiza
Texto completo
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Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2022 Tipo del documento: Article País de afiliación: República Checa Pais de publicación: Suiza