The goal of this study was to investigate the optical properties of the prepared polyvinyl chloride (PVC)/zinc oxide (ZnO) nanocomposite films. The PVC/ZnO nanocomposite films consist of the addition of different concentrations with both non-annealed ZnO nanoparticles and ZnO nanoparticles annealed at temperature of 700°C. The PVC/ZnO nanocomposite films by weight concentrations of (0 wt.%, 2.5 wt.%, 5 wt.% and 10 wt.%) have been prepared by the casting method. The optical absorbance and transmittance values of the composites films were measured in the wavelength range between (250 to 1100 nm) at room temperature by using the UV-1800 Shimadzu spectrophotometer. The optical properties (absorption coefficient, dielectric constant, refractive index, and optical conductivity) have been investigated by the ultraviolet (UV) spectrophotometer. The optical parameters (direct optical energy gap, excitation energy for electronic transitions, the dispersion energy, static refractive index, static dielectric constant, optical oscillator strengths, the moments of optical spectrum, linear optical susceptibility, third-order nonlinear optical susceptibility, nonlinear refractive index, high-frequency dielectric constant, the carrier concentration to the effective mass ratio, the long wavelength refractive index and the plasma frequency) were calculated. The results showed that the optical properties behavior of the PVC/ZnO nanocomposite films was found to be dependent on the ZnO concentration, and photon wavelength. In addition, the results of the study show that the optical parameters can be influenced by alter the concentration of the nonannealed and annealed a ZnO nanoparticle in the PVC polymer matrix.

本研究的目的是研究制备的聚氯乙烯 (PVC)/氧化锌 (ZnO) 纳米复合薄膜的光学性能。PVC/ZnO 纳米复合薄膜由添加不同浓度的未退火 ZnO 纳米颗粒和在 700°C 温度下退火的 ZnO 纳米颗粒组成。通过流延法制备了重量浓度为（0wt.%、2.5wt.%、5wt.%和10wt.%）的PVC/ZnO纳米复合膜。使用UV-1800 Shimadzu分光光度计在室温下（250至1100 nm）的波长范围内测量复合膜的吸光度和透射率值。已通过紫外 (UV) 分光光度计研究了光学特性（吸收系数、介电常数、折射率和光导率）。光学参数（直接光能隙、电子跃迁的激发能量、色散能量、静态折射率、静态介电常数、光振子强度、光谱矩、线性光磁化率、三阶非线性光磁化率、非线性折射指数，高频介电常数，载流子浓度与有效质量比，长波长折射率和等离子体频率）被计算。结果表明，PVC/ZnO 纳米复合薄膜的光学性能取决于 ZnO 浓度和光子波长。此外，