研究目的
To investigate the structure and optical properties of PVC/NiO nanocomposites, focusing on the effects of NiO nanoparticles doping on the optical parameters and potential applications in nonlinear optical devices.
研究成果
The incorporation of NiO nanoparticles into PVC films modifies their optical properties, including reduced optical band gaps and increased optical conductivity, refractive index, and nonlinear optical parameters. These changes suggest potential applications in nonlinear optical and photonic devices. The study highlights the importance of nanoparticle doping in tailoring polymer properties for specific applications.
研究不足
The study is limited by the concentration range of NiO nanoparticles used (up to 0.5 wt%) and the focus on optical properties without extensive exploration of mechanical or thermal properties. The experimental determination of nonlinear optical properties is noted as complex and not common in most laboratories.
1：Experimental Design and Method Selection:
The study involved the preparation of NiO nanoparticles via a sol-gel method and their incorporation into PVC films using a solution casting method. The optical and structural properties were characterized using XRD, TEM, SEM, and UV-Vis spectrophotometry.
2：Sample Selection and Data Sources:
Samples included pure PVC and PVC doped with NiO nanoparticles at 0.1, 0.3, and 0.5 wt%. Data were obtained from experimental measurements.
3：1, 3, and 5 wt%. Data were obtained from experimental measurements.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Equipment included X-Ray diffractometer (Philips X’pert MPD), TEM (JEM 1230, JEOL), SEM (Quanta FEG250), and UV-Vis spectrophotometer (UVD-2950). Materials included PVC powder, Ni(NO3)2·6H2O, and THF.
4：0). Materials included PVC powder, Ni(NO3)2·6H2O, and THF.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: NiO nanoparticles were prepared and mixed with PVC solution, which was then cast into films. The films were characterized for their structural and optical properties.
5：Data Analysis Methods:
Optical parameters were calculated using Tauc’s formula, Wemple and DiDominco model, and semiempirical relations for nonlinear optical properties.
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