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Laser Ablation Synthesis in Solution of Nanoantimicrobials for Food Packaging Applications

Published online by Cambridge University Press:  16 June 2015

Maria C. Sportelli ,
Antonio Ancona ,
Rosaria A. Picca ,
Adriana Trapani ,
Annalisa Volpe ,
Giuseppe Trapani  and
Nicola Cioffi
Maria C. Sportelli
Affiliation:
Department of Chemistry, University of Bari “Aldo Moro”, Bari, Italy.
Antonio Ancona
Affiliation:
IFN-CNR, Physics Department “M. Merlin”, Bari, Italy.
Rosaria A. Picca
Affiliation:
Department of Chemistry, University of Bari “Aldo Moro”, Bari, Italy.
Adriana Trapani
Affiliation:
Department of Pharmacy-Drug Sciences, University of Bari “Aldo Moro”, Bari, Italy.
Annalisa Volpe
Affiliation:
IFN-CNR, Physics Department “M. Merlin”, Bari, Italy.
Giuseppe Trapani
Affiliation:
Department of Pharmacy-Drug Sciences, University of Bari “Aldo Moro”, Bari, Italy.
Nicola Cioffi
Affiliation:
Department of Chemistry, University of Bari “Aldo Moro”, Bari, Italy.
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Abstract

Designing bioactive materials, with controlled metal ion release, exerting significant bioactivity and associated low toxicity for humans, is nowadays one of the most important challenges for the scientific community. In this work, we propose a new material combining the well-known antimicrobial properties of copper nanoparticles (CuNPs) with those of bioactive chitosan (CS), a cheap natural polymer widely exploited for its biodegradability and nontoxicity. Here, we used ultrafast femtosecond laser pulses to finely fragment, via laser ablation, a Cu solid target immersed into aqueous CS solutions. Homogeneously dispersed copper-chitosan (Cu-CS) colloids were obtained by tuning the Cu/CS molar ratios, according to the initial chitosan concentration, as well as other experimental parameters. Cu-CS colloids were characterized by several techniques, like UV-Vis and X-ray Photoelectron spectroscopies (XPS). Transmission Electron Microscopy (TEM) was used to morphologically characterize the novel nanocomposites.

Keywords

laser ablationCupolymer
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1804: Symposium RR – Solution Syntheses of Inorganic Functional/Multifunctional Materials , 2015 , pp. 37 - 42
Copyright
Copyright © Materials Research Society 2015 

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