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High-density polystyrene-grafted silver nanoparticles and their use in the preparation of nanocomposites with antibacterial properties

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cris.lastimport.scopus2024-02-12T19:47:32Z
dc.abstract.enThe achievement of uniform nanoparticles distribution in polymer matrix is still a major challenge in the design and fabrication of polymer nanocomposites with desired properties. In this paper we propose a novel approach for the preparation of homogeneous polystyrene/silver nanocomposites utilizing Nitroxide Mediated Radical Polymerization (NMRP). In the first step of the developed procedure, the polystyrene grafted silver nanoparticles (Ag@PS) with well-defined core-shell structure and exceptionally high grafting density (from 2 chains/nm2 to 5.9 chains/nm2) have been synthesized through late injection of nitroxide-coated silver nanoparticles (N-AgNPs) into a TEMPOL mediated styrene polymerization system. Afterwards, the synthesized Ag@PS have been used for the preparation of nanocomposites (PS/Ag@PS) by mixing them with narrow-dispersity polystyrenes and thermoforming at 140°C. Due to the high flexibility of polymer chains attached to silver surface through nitroxide linker, free volume effect enables interpenetration of polystyrene molecules that provides excellent mutual miscibility of Ag@PS with polymer matrix. The synthesized nanohybrids (Ag@PS) and their nanocomposites (PS/Ag@PS) exhibit effective antibacterial activity with respect to pathogenic bacteria: Pseudomonas aeruginosa (Gram-negative representative) and Staphylococcus aureus (Gram-positive representative).
dc.affiliationUniwersytet Warszawski
dc.contributor.authorMegiel, Elżbieta
dc.contributor.authorTomaszewski, Waldemar
dc.contributor.authorKrystosiak, Piotr
dc.date.accessioned2024-01-25T03:08:47Z
dc.date.available2024-01-25T03:08:47Z
dc.date.issued2017
dc.description.financeNie dotyczy
dc.description.volume498
dc.identifier.doi10.1016/J.JCIS.2017.03.041
dc.identifier.issn0021-9797
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/108453
dc.identifier.weblinkhttp://www.sciencedirect.com/science/article/pii/S002197971730293X
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofJournal of Colloid and Interface Science
dc.relation.pages9-21
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enPolymer brushes
dc.subject.enNanocomposites
dc.subject.enSilver nanoparticles
dc.subject.enNitroxides
dc.subject.enControlled radical polymerization
dc.subject.enAntibacterial materials
dc.titleHigh-density polystyrene-grafted silver nanoparticles and their use in the preparation of nanocomposites with antibacterial properties
dc.typeJournalArticle
dspace.entity.typePublication