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dc.contributor.authorBrobbey, Kofi J
dc.contributor.authorHaapanen, Janne
dc.contributor.authorMäkelä, Jyrki M
dc.contributor.authorGunell, Marianne
dc.contributor.authorEerola, Erkki
dc.contributor.authorRosqvist, Emil
dc.contributor.authorPeltonen, Jouko
dc.contributor.authorSaarinen, Jarkko J
dc.contributor.authorTuominen, Mikko
dc.contributor.authorToivakka, Martti
dc.date.accessioned2019-05-10T11:59:22Z
dc.date.available2019-05-10T11:59:22Z
dc.date.issued2019
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/7602
dc.description.abstractSilver nanoparticles (NPs) are known to provide antimicrobial properties for surfaces. However, there are environmental concerns due to reports of toxicity after exposure to the environment during or after end-use. Immobilizing silver NPs to the surface of substrates could ensure that particles are readily available for antibacterial activity with limited environmental exposure. A plasma coating on top of silver NPs could improve the adhesion of NPs to a substrate, but it could also impede the release of silver NPs completely. Furthermore, silver has been shown to require direct contact to demonstrate antibacterial activity. This study demonstrates immobilization of silver NPs with plasma coating onto a surface while maintaining its antibacterial properties. Silver NPs are simultaneously synthesized and deposited onto a surface with liquid flame spray aerosol technique followed by hexamethyldisiloxane plasma coating to immobilize the NPs. Atomic force microscope scratch testing is used to demonstrate improved nanoparticle adhesion. Antibacterial activity against gram-negative Escherichia coli is maintained even for plasma coating thicknesses of 195 nm. NP adhesion to the surface is significantly improved. Gram-positive Staphylococcus aureus was found be resistant to all the plasma-coated samples. The results show promise of using plasma coating technology for limiting NP exposure to environment.
dc.language.isoenglanti
dc.publisherElsevier BV
dc.relation.ispartofseriesThin solid films
dc.relation.urihttp://dx.doi.org/10.1016/j.tsf.2018.12.049
dc.rightsCC BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectliquid flame spray
dc.subjectsilver
dc.subjectnanoparticles
dc.subjectplasma coating
dc.subjectantibacterial effects
dc.subjecthexamethyldisiloxane
dc.subjectscratch test
dc.titleEffect of plasma coating on antibacterial activity of silver nanoparticles
dc.description.versionfinal draft
dc.contributor.departmentDepartment of Chemistry, activities
uef.solecris.id60664281en
dc.type.publicationTieteelliset aikakauslehtiartikkelit
dc.rights.accessrights© Elsevier B.V.
dc.relation.doi10.1016/j.tsf.2018.12.049
dc.description.reviewstatuspeerReviewed
dc.format.pagerange75-82
dc.publisher.countrySveitsi
dc.relation.issn0040-6090
dc.relation.volume672
dc.rights.accesslevelopenAccess
dc.type.okmA1
uef.solecris.openaccessEi


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