Poly(lactic acid) (PLA) is a very attractive polymer for food packaging application. In this work we tried to develop a smart PLA film, especially to improve its potential food applications providing antibacterial properties by means of functionalization of the film surface with cardanol-based vesicle nanodispersion obtained by an environmental-friendly process. We used cardanol-based nanovesicles loaded with porphyrin molecules itself cardanol functionalized, in order to prepare a composite material that can act as potential 'smart film' as acid indicator: The film changes its colour according to the acid atmosphere it reveals thanks to the conformational change of porphyrin. Starting from commercial PLA pellets, films were extruded and cardanol-based nanovescicles embedded with porphyrin were deposited on these PLA films by simple casting of the aqueous vescicular nanodispersion. The functionalized PLA films were then studied by mechanical testing. SEM-FEG characterization, and UV-visible measurements were performed to investigate the presence of cardanol-based nanodispersion on the film and the acid response of porphyrin.

Smart Poly(lactic acid)-functionalized films with cardanol-based nanovesicles obtained from renewable resources for food packaging application

Bloise
Penultimo
Formal Analysis
;
Mele giuseppe
Ultimo
Investigation
2018

Abstract

Poly(lactic acid) (PLA) is a very attractive polymer for food packaging application. In this work we tried to develop a smart PLA film, especially to improve its potential food applications providing antibacterial properties by means of functionalization of the film surface with cardanol-based vesicle nanodispersion obtained by an environmental-friendly process. We used cardanol-based nanovesicles loaded with porphyrin molecules itself cardanol functionalized, in order to prepare a composite material that can act as potential 'smart film' as acid indicator: The film changes its colour according to the acid atmosphere it reveals thanks to the conformational change of porphyrin. Starting from commercial PLA pellets, films were extruded and cardanol-based nanovescicles embedded with porphyrin were deposited on these PLA films by simple casting of the aqueous vescicular nanodispersion. The functionalized PLA films were then studied by mechanical testing. SEM-FEG characterization, and UV-visible measurements were performed to investigate the presence of cardanol-based nanodispersion on the film and the acid response of porphyrin.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11587/469704
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact