Innovative films by embedding magnetic nanoparticles in cellulose acetate

• DOI: 10.1016/j.fpsl.2024.101264
• Publication Date: 2024-03-01T11:38:21Z
• Authors: Lisandra de Castr...; Miguel A. Cerqueira; Manuel A. Gonzále...; Pelayo Garcia-Ace...; Ángela Arnosa Prieto; Yolanda Piñeiro R...; Lorenzo Pastrana; José Rivas
• Keywords: Matrix (chemical analysis); Superparamagnetism

Magnetic nanoparticles (MNPs) with different magnetic, physical, and chemical properties can be used to develop magnetic tags, offering a unique traceability capability that then improve products' safety. In this work, synthesized MNPs were incorporated into cellulose acetate (CA) matrix characterized in their pristine form when the films. Results show are composition, morphology, size, response. Afterwards, iron carbide (Fe5C2), hexagonal-shaped (Fe3O4 @OA) multicore magnetite (m-Fe3O4) (NPs) embedded within CA showing good distribution films' matrix. Nevertheless, films 0.1 wt% of Fe5C2 NPs (FM1), m-Fe3O4 (FM4) offered more uniform dispersion over Incorporating does not affect mechanical water sensitivity. optical affected high impact for NPs. Particularly tagging, displayed similar responses respective bulk NPs, potential as anti-counterfeiting tags food packaging applications.