Dielectric, optical and thermal properties of LDPE/ZnO hybrid film

The hybrid films of low-density polyethylene (LDPE) embedded with zinc oxide (ZnO) particles were prepared by melt-blending process. X-ray diffraction (XRD) results illustrate that ZnO particles are distributed in the LDPE matrix and FTIR results show that no chemical bonds form between ZnO particles and LDPE matrix. The measurements of the dielectric properties of the hybrid films show that the dielectric constant of the composites reinforces and dielectric loss increases with increasing ZnO weight fraction. Moreover, the thermal properties of the LDPE/ZnO hybrid films are improved and the results of optical properties studied by ultraviolet-visible (UV-Vis) spectrometer show that the inclusion of ZnO particles can improve the anti-UV properties of the films. The improvements of the dielectric, optical and thermal properties demonstrate that the hybrid film will be a promising material in the food package and engineering fields.