title: MMT-supported Ag nanoparticles for chitosan nanocomposites: structural properties and antibacterial activity.
abstract: Multifunctional bionanocomposites have been prepared by loading chitosan matrix with silver-montmorillonite antimicrobial nanoparticles obtained by replacing Na(+) ions of natural montmorillonite with silver ions. This filler has been chosen for its twofold advantage to serve as silver supporting material and to confer new and better performance to the obtained material. It has been proved that the achievement of the intercalation of chitosan into the silicate galleries of montomorillonite as well as the interaction between chitosan and Ag ions and silver particles lead to an enhancement of the thermal stability, to an improvement of mechanical strengths and to a reduction of the liquid water uptake of the obtained bionanocomposites. Results also show that silver ions are released in a steady and prolonged manner providing, after 24 h, a significant reduction in the microbial growth of Pseudomonas spp.
authors: National Research Council - Institute for Composite and Biomedical Materials, P.le E. Fermi, 1, 80155 Portici, Naples, Italy.
authors: M
authors: M
authors: Lavorgna
authors: Department of Production and Materials Engineering - University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy.
authors: I
authors: I
authors: Attianese
authors: National Research Council - Institute for Composite and Biomedical Materials, P.le E. Fermi, 1, 80155 Portici, Naples, Italy. Electronic address: gbuonoco@unina.it.
authors: G G
authors: GG
authors: Buonocore
authors: Department of Agricultural Sciences, Food and Environment, University of Foggia, via Napoli 25, 71122 Foggia, Italy.
authors: A
authors: A
authors: Conte
authors: Department of Agricultural Sciences, Food and Environment, University of Foggia, via Napoli 25, 71122 Foggia, Italy.
authors: M A
authors: MA
authors: Del Nobile
authors: National Research Council - Institute for Composite and Biomedical Materials, P.le E. Fermi, 1, 80155 Portici, Naples, Italy.
authors: F
authors: F
authors: Tescione
authors: National Research Council - Institute for Composite and Biomedical Materials, P.le E. Fermi, 1, 80155 Portici, Naples, Italy.
authors: E
authors: E
authors: Amendola
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology; D048271:Chitosan / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D012834:Silver / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D012834:Silver; D048271:Chitosan
keywords: Antibacterial; Bionanocomposite; Chitosan; Montmorillonite; Silver