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. © 2015 IEEE.
Titolo: | Smart Poly(lactic acid)-functionalized films with cardanol-based nanovesicles obtained from renewable resources for food packaging application |
Autori: | |
Data di pubblicazione: | 2018 |
Handle: | http://hdl.handle.net/20.500.12079/5868 |
ISBN: | 9781509051519 |
Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |