Antibacterial and Physical Properties of Poly(vinyl chloride)-based Film Coated with ZnO Nanoparticles

Abstract

Nanoparticles of ZnO and their application in coating systems have attracted a great deal of attention in recent years because of its multifunction property, especially antibacterial activity. In this study, antibacterial and physical properties of poly(vinyl chloride) (PVC) based film coated with ZnO nanoparticles were investigated. It was found that the antibacterial action should be attributed to the killing effect property of ZnO nanoparticles. The ZnO-coated films treated by shaking for 10 h exhibited a similar high antibacterial activity against Escherichia coli and Staphylococcus aureus as the untreated ZnO-coated films. This result indicated that the ZnO nanoparticles adhered very well to the plastic film. The antibacterial activity of the ZnO-coated film to inactivate E. coli or S. aureus was improved by UV irradiation. The analysis of physical properties of the ZnO-coated films revealed that the nano-ZnO particles showed less effects on the tensile strength and elongation at break of the film. The ultraviolet (UV) light fastness of the ZnO-coated PVC film was improved, which may be attributed to the absorption of ZnO nanoparticles against UV light. Water vapor transmission of the ZnO-coated film decreased from 128 to 85 g/m(2) · 24 h, whereas the thickness of film increased from 6.0 μm with increasing the amount of nano-ZnO particles coated from 0 to 187.5 μg/cm(2). This research revealed that the PVC film coated with nano-ZnO particles has a good potential to be used as an active coating system for food packaging.

Bio-approach: Plant mediated synthesis of ZnO nanoparticles and their catalytic reduction of methylene blue and antimicrobial activity

“…Zhang et al[48] reported that nano size of ZnO was 573 more effective than micro size of ZnO due to easy penetration 574 through cell wall of microorganisms. Excellent antimicrobial activ-575 ity of ZnO NPs against S. aureus and E. coli and the corresponding 576 mechanism of action had also been demonstrated to Li et al 577[49,50].…”

Antimicrobial, rheological, and physicochemical properties of sago starch films filled with nanorod-rich zinc oxide

“…Zinc oxide has been widely used as functional filler in UV-absorbers for application in pharmaceutical materials, cosmetics, coating materials, and pigments (Kumar and Singh, 2008;Li et al, 2009;Yu et al, 2004). In addition, the use of zinc oxide nanoparticles is considered to be a viable method for the prevention of infectious diseases through the antimicrobial effects of zinc oxide (Li et al, 2009(Li et al, , 2010Rajendra et al, 2010;Zhang et al, 2008).…”

Effects of poly(ethylene oxide) and ZnO nanoparticles on the morphology, tensile and thermal properties of cellulose acetate nanocomposite fibrous film

“…The incorporation of metal nanoparticles (NPs) into polymer film matrices has been noted as the most promising method of achieving the latter goal. [1][2][3][4][5][6] The NPs offer an antimicrobial ability because of their extremely small particle sizes, which provide an extraordinarily high ratio of surface area to volume or surface area to weight as well as an innumerable number of active surfaces. Zinc oxide (ZnO) has been reported as an interesting potential substance for use in foods in antimicrobial applications.…”