Nanocellulose Filled Bio-Based PVA/Chitosan Nanocomposites: Structure-Property Relationships Toward Advanced Food Packaging Films.

ABSTRACT: Biodegradable chitosan/poly(vinyl alcohol) (PVA) composite films were reinforced either with nanocrystalline cellulose (CNC) or nano-lignocellulose (NLC) and evaluated across a polyparametric design of five matrix ratios and three filler levels for active food packaging applications. ATR-FTIR, DSC, XRD, and SEM demonstrated that 1-5% nanocellulose loading induced a single relaxation temperature (T_g), homogenized the morphology, and enhanced the crystallinity of blend material, evidencing improved thermodynamic compatibility. SEM confirmed uniform filler dispersion up to 5% loading in PVA-rich matrices, whereas limited aggregation appeared in chitosan-dominant systems. CO₂ barrier property (CO₂ permeability coefficients) was diminished by more than two order

SUBMITTER: Papapetros K 

PROVIDER: S-EPMC12694045 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature