Chitosan (CH)-based composite films have attracted increasing attention as promising green food packaging materials due to their biodegradability and ease of fabrication. Additionally, lignin (LN) has been widely used as additive for chitosan-based films to improve their physicochemical properties. In this study, a series of composite films made of chitosan nanoparticles (NCH) as a matrix and alkali lignin nanoparticles (LNPs) as functional filler were prepared. The NCH-LNPs composite films exhibited a more uniform appearance and enhanced crystallinity compared to NCH-LN films. The maximum pyrolysis temperature of NCH-LNPs films, determined by TG, reached 309 °C. Moreover, the antioxidant capacity of NCH-LNPs film was 1.5 and 3.4 times higher than those of NCH-LN and NCH films, respectively. The tensile modulus of NCH-LNPs films increased by 8.9 % and 36.5 %, while the tensile strain …
Preparation of chitosan/lignin nanoparticles-based nanocomposite films with high-performance and improved physicochemical properties for food packaging applications
Salazar S. A.;Cerruti P.;
2025
Abstract
Chitosan (CH)-based composite films have attracted increasing attention as promising green food packaging materials due to their biodegradability and ease of fabrication. Additionally, lignin (LN) has been widely used as additive for chitosan-based films to improve their physicochemical properties. In this study, a series of composite films made of chitosan nanoparticles (NCH) as a matrix and alkali lignin nanoparticles (LNPs) as functional filler were prepared. The NCH-LNPs composite films exhibited a more uniform appearance and enhanced crystallinity compared to NCH-LN films. The maximum pyrolysis temperature of NCH-LNPs films, determined by TG, reached 309 °C. Moreover, the antioxidant capacity of NCH-LNPs film was 1.5 and 3.4 times higher than those of NCH-LN and NCH films, respectively. The tensile modulus of NCH-LNPs films increased by 8.9 % and 36.5 %, while the tensile strain …I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
