They studied and synthesized nano-Co-MOF crystals with ammonia sensitivity and antibacterial function. After systematically studying and testing the microstructure, mechanics, water vapor blocking, ultraviolet blocking, color stability, antibacterial and ammonia response properties of sodium methylol cellulose films of Co-MOF nano-fillers, The research team believes that it can be used as a functional filler for sodium methylocellulose films, and smart active packaging based on sodium methylocellulose can be constructed. The composite material is used in the packaging of meat food, which can effectively delay the shelf life, and also can visually monitor the freshness of meat food in real time.
In addition, multi-component intelligent packaging materials based on CS/PVA have better compatibility, physical properties and functional characteristics. Recently, they have effectively manufactured ammonia sensitivity and antibacterial ability through a simple solvothermal method, and then anchored it in a CS/PVA blend film to build a smart active packaging material. The rich NH/C-N groups in SIM-1 nanocrystals may be used to establish strong hydrogen bonds with CS/PVA hydroxyl groups, and the doped SIM-1 nanocrystals can improve the compatibility, mechanical properties and water-oxygen barrier properties of SIM-1 nanocrystals, as well as increase their ammonia sensitivity and antibacterial function.
The research team has now systematically studied the microstructure and physical properties of the composite material and evaluated its use for tracking shrimp metamorphism. The relevant results have been published in the International Journal of Biological Macromolecules (2023, V230, 123129) and the International Journal of Biological Macromolecules. (2024,V256, 128373).