http://www.cnr.it/ontology/cnr/individuo/prodotto/ID196625

Activity of antimicrobial silver polystyrene nanocomposites (Articolo in rivista)

Type

Label

Activity of antimicrobial silver polystyrene nanocomposites (Articolo in rivista) (literal)

Anno

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

Alternative label

Palomba, M. [ 2 ] ; Carotenuto, G. [ 2 ] ; Cristino, L. [ 3 ] ; Di Grazia, M.A. [ 3 ] ; Nicolais, F. [ 4 ] ; De Nicola, S. [ 1,5 ] (2012)
Activity of antimicrobial silver polystyrene nanocomposites
in Journal of Nanomaterials (Online); Hindawi Publishing Corporation, Cairo (Egitto)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Palomba, M. [ 2 ] ; Carotenuto, G. [ 2 ] ; Cristino, L. [ 3 ] ; Di Grazia, M.A. [ 3 ] ; Nicolais, F. [ 4 ] ; De Nicola, S. [ 1,5 ] (literal)

Pagina inizio

Pagina fine

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

Rivista

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

Note

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

[ 1 ] CNR, Istituto Nazionale di Ottica, CNR, Via Campi Flegrei 34, 80078 Pozzuoli, Italy [ 2 ] Istituto per i Materiali Compositi e Biomedici, CNR, Piazzale Tecchio 80, 80125 Napoli, Italy [ 3 ] CNR, Istituto di Cibernetica, CNR, Via Campi Flegrei 34, 80078 Pozzuoli, Italy [ 4 ] Dipartimento di Scienze Politiche, Sociali e della Comunicazione, Università degli Studi di Salerno, Via Ponte don Melillo, 84084 Fisciano, Italy [ 5 ] INFN Sezione di Napoli, Via Cintia (Complesso Monte S. Angelo), 80126 Napoli, Italy (literal)

Titolo

Abstract

A simple technique based on doping polymers with in situ generated silver nanoparticles (Ag/PS films) has been developed. In particular, an antiseptic material has been prepared by dissolving silver 1,5-cyclooctadiene-hexafluoroacetylacetonate in amorphous polystyrene, and the obtained solid solution has been heated for ca. 10s at a convenient temperature (180°C). Under such conditions the metal precursor decomposes producing silver atoms that diffuse into the polymer and clusterize. The antimicrobial characteristics of the resulting polystyrene-based material have been accurately evaluated toward Escherichia coli (E. coli) comparing the cytotoxicity effect of 10wt.% and 30wt.% (drastic and mild annealing) silver-doped polystyrene to the corresponding pure micrometric silver powder. Two different bacterial viability assays were performed in order to demonstrate the cytotoxic effect of Ag/PS films on cultured E. coli: (1) turbidimetric determination of optical density; (2) BacLight fluorescence based test. Both methods have shown that silver-doped polystyrene (30wt.%) provides higher antibacterial activity than pure Ag powder, under similar concentration and incubation conditions. (literal)

Editore