Novel synthesis of metal-organic-framework-based film with enhanced mechanical properties, biodegradability and antibacterial performance for packaging applications

Bio-nanocomposite-based packaging materials have gained interest due to their possible applications in food packaging. Cellulose acetate (CA) is a biopolymer obtained by acetylation of cellulose and has characteristics such as biocompatibility, biodegradability and high transparency. Introducing Metal-Organic Frameworks (MOFs) offer good mechanical strength, unique surface area and both chemical and thermally stable, making them great supporting materials in the development of polymer-based packaging materials. Among them, Fe-MIL-88A an iron-based MOF, integrated with CA and spinach extract was added to the prepared material in different compositions and cast as a film. The Spinach loaded, Fe-MIL-88A integrated cellulose acetate film significantly enhanced the tensile strength, water vapour permeability, and anti-microbial activity. The prepared film is then characterized using a scanning electron microscope (SEM), Fourier transforms infrared spectrometer (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). Further, studies on mechanical properties, degradation test and real-time applications of the prepared films were carried out.