High-barrier and antibacterial films based on PET/SiOx for food packaging applications

Abstract High-barrier and antibacterial materials have potential applications in the field of preservative packaging for fresh meat products. In this paper, UV irradiation and silane coupling agent (KH550) were used to modify the surface of SiOx coating on polyester (PET)/SiOx film to prepare the PET/SiOx/chitosan and PET/SiOx/chitosan-nano-ZnO composite film, respectively. The contact angle test revealed that KH550 improved the surface hydrophilicity of SiOx significantly compared to UV irradiation, and thus PET/SiOx/chitosan and PET/SiOx/chitosan-nano ZnO composite films were successfully pr...