Non-woven textile materials with antimicrobial properties are of high demands for applications ranging from medical dressing to everyday cleaning products. A plasma assisted route to engineer antimicrobial nano-composite coatings is proposed. Nano-particles of Ag, Cu and ZnO are tested as antimicrobial agents with average nano-particle size of 20-50 nm. Nanoparticles are incorporated in between two layers of an organosilicon film. The effect of the barrier coating on nano-particles release is determined by XPS.
Antibacterial efficiency of the samples against P. aeruginosa ATCC 9027 and S. aureus M u50 bacteria shows that all treated samples exhibit higher antibacterial efficiency against S. aureus. The antibacterial efficiency of AgNPs and CuNPs is above 90% which is practically interesting for medical application while ZnONPs shows lower antibacterial efficiency.This work is supported by the M.Era-Net project IWT 140812 “PlasmaTex”.info:eu-repo/semantics/publishedVersio

Cvelbar, Uros

De Vrieze, Mike

Dinescu, Gheorghe

Heyse, Pieter

Kuchakova, Iryna

Leys, Christophe

Mitu, Bogdana

Modic, Martina

Nikiforov, Anton

Vanneste, Myriam

Zille, Andrea

ECS Transactions

Anton Nikiforov

Christophe Leys

Iryna Kuchakova

Myriam Vanneste

Pieter Heyse

Mike De Vrieze

Andrea Zille

Gheorghe Dinescu

Bogdana Mitu

Martina Modic

Uros Cvelbar

Crossref

(Invited) Plasma Deposition of Antibacterial Nano-Coatings on Polymeric Materials

Non-woven textile materials with antimicrobial properties are of high demands for applications ranging from medical dressing to everyday cleaning products. We proposed a plasma assisted route to engineer polymer films and non-woven fabrics with antimicrobial nano-composite coatings. The project aims to optimize atmospheric pressure plasma deposition in order to engineer the coatings with high antibacterial activity and low cytotoxicity. Different methods of deposition are tested including radio-frequency plasma, direct current discharge in nitrogen as well barrier discharge in air with two methods of nano-particles incorporation: aerosol and impregnation. Nano-particles Ag, Cu and ZnO are tested as antimicrobial agents with average nano-particle size of about 50 nm. Nanoparticles are incorporated in between two layers of an organosilicon film with an impregnation process or alternatively through an aerosol injection step with averaged concentration of the nano-particles in the solution ranging in between 10 to 1000 mg/l. Incorporation is made in a “sandwich-like structure” where a top layer coating (barrier) of 5 - 50 nm thickness is used for precise control of metal ions release and a reservation layer of about 200 nm is used for NPs load. The effect of the barrier coating on the surface concentration of nano-particles is determined by XPS. It is shown that an increase of the thickness of the barrier layer from 5 to 25 nm leads to a decrease of Ag content from 0.24 to 0.08 at. %. Similar effect is found for nano-particles of Cu and ZnO. Antibacterial efficiency of the samples against P. aeruginosa ATCC 9027 and S. aureus M u50 bacteria shows that all treated samples exhibit higher antibacterial efficiency against S. aureus. The antibacterial efficiency of AgNPs and CuNPs is above 90% which is practically interesting for medical application while ZnONPs shows lower antibacterial efficiency. Cytotoxicity of the coatings and materials is investigated for different deposition conditions and analyzed in terms of possible medical applications.FCT; This work is supported by the M.Era-Net project  “PlasmaTex”.info:eu-repo/semantics/publishedVersio

De Vriezeb, Mike

Universidade do Minho: RepositoriUM

D02­1031: (Invited) Plasma Deposition of Antibacterial Nano­Coatings onPolymeric MaterialsTuesday, 30 May 201716:20 ­ 17:00Hilton New Orleans Riverside ­ TrafalgarNon­woven textile materials with antimicrobial properties are of high demands for applications ranging from medicaldressing to everyday cleaning products. We proposed a plasma assisted route to engineer polymer films and non­woven fabrics with antimicrobial nano­composite coatings. The project aims to optimize atmospheric pressure plasmadeposition in order to engineer the coatings with high antibacterial activity and low cytotoxicity. Different methods ofdeposition are tested including radio­frequency plasma, direct current discharge in nitrogen as well barrier discharge inair with two methods of nano­particles incorporation: aerosol and impregnation. Nano­particles Ag, Cu and ZnO aretested as antimicrobial agents with average nano­particle size of about 50 nm. Nanoparticles are incorporated inbetween two layers of an organosilicon film with an impregnation process or alternatively through an aerosol injectionstep with averaged concentration of the nano­particles in the solution ranging in between 10 to 1000 mg/l.Incorporation is made in a “sandwich­like structure” where a top layer coating (barrier) of 5 ­ 50 nm thickness is usedfor precise control of metal ions release and a reservation layer of about 200 nm is used for NPs load. The effect of thebarrier coating on the surface concentration of nano­particles is determined by XPS. It is shown that an increase of thethickness of the barrier layer from 5 to 25 nm leads to a decrease of Ag content from 0.24 to 0.08 at. %. Similar effectis found for nano­particles of Cu and ZnO. Antibacterial efficiency of the samples against P. aeruginosa ATCC 9027and S. aureus M u50 bacteria shows that all treated samples exhibit higher antibacterial efficiency against S. aureus.The antibacterial efficiency of AgNPs and CuNPs is above 90% which is practically interesting for medical applicationwhile ZnONPs shows lower antibacterial efficiency. Cytotoxicity of the coatings and materials is investigated fordifferent deposition conditions and analyzed in terms of possible medical applications.This work is supported by the M.Era­Net project IWT 140812 “PlasmaTex”.AuthorsAnton NikiforovChristophe LeysIryna KuchakovaMyriam VannestePieter HeyseMike De VriezeAndrea ZilleGheorghe DinescuBogdana MituMartina ModicUros CvelbarGhent UniversityGhent UniversityGhent UniversityCentexBelCentexBelCentexBelUniversity of MinhoNILPRPNILPRPJozef Stefan InstituteJozef Stefan InstituteView Related EventsDay: Tuesday, 30 May 2017

(Invited) Plasma deposition of antibacterial nano-coatings on polymeric materials