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    Biopolymer-Based Films Reinforced with FexOy-Nanoparticles

    Year: 2022

    Journal: Polymers, Volume 14, NOV

    Authors: Ahmed Abdullah, Johar Amin; Jimenez-Rosado, Mercedes; Benitez, Jose J.; Guerrero, Antonio; Romero, Alberto

    Organizations: [MCIN/AEI/10.13039/501100011033/FEDER]; [PID2021-124294OB-C21]

    Keywords: gelatin; cellulose acetate; chitosan; iron oxide nanoparticles; mechanical properties

    Nowadays, natural polymer-based films are considered potentially environmentally friendly alternatives to conventional plastic films, due to many advantageous properties, including their easy processability, high flexibility, non-toxicity, low cost, high availability, and environmental safety. However, they are limited in their application by a number of shortcomings, including their high water solubility and vapor permeability as well as their poor opacity and low mechanical resistance. Thus, nanoparticles, such as green FexOy-NPs, can be used to overcome the drawbacks associated with these materials. Therefore, the aim of this study was to develop three different polymer-based films (gelatin-based, cellulose acetate-based and chitosan-based films) containing green synthesized FexOy-NPs (1.0% w/w of the initial polymer weight) as an additive to improve film properties. This was accomplished by preparing the different films using the casting method and examining their physicochemical, mechanical, microstructural, and functional characteristics. The results show that the incorporation of FexOy-NPs into the different films significantly enhanced their physicochemical, mechanical, and morphological properties as well as their antioxidant characteristics. Consequently, it was possible to produce suitable natural polymer-based films with potential applications across a wide range of industries, including functional packaging for food, antioxidants, and antimicrobial additives for pharmaceutical and biomedical materials as well as pesticides for agriculture.
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