Multilayers of Renewable Nanostructured Materials with High Oxygen and Water Vapor Barriers for Food Packaging.

ABSTRACT: Natural biopolymers have become key players in the preparation of biodegradable food packaging. However, biopolymers are typically highly hydrophilic, which imposes limitations in terms of barrier properties that are associated with water interactions. Here, we enhance the barrier properties of biobased packaging using multilayer designs, in which each layer displays a complementary barrier function. Oxygen, water vapor, and UV barriers were achieved using a stepwise assembly of cellulose nanofibers, biobased wax, and lignin particles supported by chitin nanofibers. We first engineered several designs containing CNFs and carnauba wax. Among them, we obtained low water vapor permeabilities in an assembly containing three layers, i.e., CNF/wax/CNF, in which wax was present as a continuous la

SUBMITTER: Pasquier E 

PROVIDER: S-EPMC9815692 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature