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Polymers 2019, 11(1), 68; https://doi.org/10.3390/polym11010068

Light-Responsive Nanocapsule-Coated Polymer Films for Antimicrobial Active Packaging

1
Institute for Polymers, Composites and Biomaterials (IPCB-CNR) Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy
2
Department of Chemical, Materials and Production Engineering (DICMAPI) University of Naples “Federico II”, P. le Tecchio, 80, 80125 Napoli, Italy
3
Institute of Biomolecular Chemistry (ICB-CNR) Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy
4
Department of Chemical Engineering (DEQ), Universitat Rovira i Virgili, Av. Països Catalans, 26, 43007 Tarragona, Spain
5
Chemistry Technology Centre of Catalonia (CTQC), C/Marcel·lí Domingo, 43007 Tarragona, Spain
6
Institute for Polymers, Composites and Biomaterials (IPCB-CNR) Via Previati 1/C, 23900 Lecco, Italy
*
Author to whom correspondence should be addressed.
Received: 25 November 2018 / Revised: 21 December 2018 / Accepted: 28 December 2018 / Published: 5 January 2019
(This article belongs to the Special Issue Polymer Nanocapsules)
Full-Text   |   PDF [2407 KB, uploaded 9 January 2019]   |  

Abstract

The development of antimicrobial active packaging constitutes a powerful tool to reduce waste and increase quality standards of perishable goods. Among numerous available antimicrobial agents, essential oils stand out for their renowned efficiency, and their use is beneficial due to their sustainability compared to other oil-based antimicrobials. In this work, we report on the use of photo-responsive nanocapsules containing thyme essential oil as functional coatings for polyethylene and polylactic acid films to obtain antimicrobial active packaging. Polymer surface activation treatment enhanced compatibility with nanocapsules solution. The films were analyzed to assess the structural and functional properties of the coating, evaluate morphological changes due to their photo-responsive behavior, and monitor the light-induced release of volatile thyme oil. It was found that 24 h after a 15-min UV exposure of the coated films, the concentration of thyme oil in the headspace was eight times higher with respect to un-irradiated films, thus confirming the efficiency of the light-triggered release system. Therefore, the manufactured films are proposed as on-demand release devices for application in non-contact antimicrobial active packaging. View Full-Text
Keywords: active packaging; photo-responsive nanocapsules; essential oils; antimicrobials; coatings active packaging; photo-responsive nanocapsules; essential oils; antimicrobials; coatings
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Marturano, V.; Bizzarro, V.; Ambrogi, V.; Cutignano, A.; Tommonaro, G.; Abbamondi, G.R.; Giamberini, M.; Tylkowski, B.; Carfagna, C.; Cerruti, P. Light-Responsive Nanocapsule-Coated Polymer Films for Antimicrobial Active Packaging. Polymers 2019, 11, 68.

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