Structural and Optical Characteristics of Laser Irradiated CdSe/PVA Nanocomposites
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S. A. Nouh
Abstract
Nanocomposites of polyvinyl alcohol (PVA) and Cadmium selenide (CdSe) were fabricated by ex-situ casting technique. CdSe nanoparticles were prepared by thermolysis under the flow of nitrogen. Rietveld refinement of x-ray data showed that the prepared CdSe adapts cubic zinc blend structure with a lattice parameter 6.057 Å and a mean grain size of 2 nm. Samples from CdSe/PVA nanocomposite have been exposed to infrared (IR) laser fluences in the range 0–19.6 J/cm2. The effect of IR laser radiation on the structural and optical properties of CdSe/PVA has been investigated using XRD and UV-vis spectroscopy. UV/VIS absorption spectra confirm the formation of hybridized film CdSe/PVA nanocomposite with refractive index in the range of 1.4119–1.8621 (at 700 nm). Also, the laser radiation reduces the optical energy gap from 4.1 to 3.43 eV which could be attributed to the increase in structural disorder of the irradiated CdSe/PVA nanocomposites due to the formation of coordination reaction between OH of PVA and CdSe nanoparticles. This means that the laser radiation led to a more compact structure of CdSe/PVA nanocomposite and causes proper dispersion of CdSe nanoparticles in the PVA matrix. Further, the Commission Internationale de E'Claire (CIE units x, y and z) methodology was applied in this work for the description of colored samples. The color intensity ΔE, which is the color difference between the non irradiated sample and the irradiated ones, was increased from 11.40 to 30.57 with increasing the laser fluence up to 19.6 J/cm2.
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© 2019, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Flow-Fiber Coupled Viscosity in Injection Molding Simulations of Short Fiber Reinforced Thermoplastics
- Effects of Cooling Ways on the Structure of Polypropylene Hollow Fiber Membranes Prepared by Stretching
- Fill Factor Effects in Highly-Viscous Non-Isothermal Rubber Mixing Simulations
- Morphology and Isothermal Crystallization Kinetics of Polypropylene/Poly(ethylene-co-vinyl alcohol) Blends
- Mechanical and Thermal Properties of Teak Wood Flour/Starch Filled High Density Polyethylene Composites
- Three-Dimensional, Non-Isothermal Simulations of the Effect of Speed Ratio in Partially-Filled Rubber Mixing
- Edge Effect in Hot Embossing and its Influence on Global Pattern Replication of Polymer-Based Microneedles
- Enhancing Flame Retardancy, Thermal Stability, Physical and Mechanical Properties of Polyethylene Foam with Polyphosphate Modified Expandable Graphite and Ammonium Polyphosphate
- Processing LDS-Circuit Boards by Selective Laser Sintering
- Structural and Optical Characteristics of Laser Irradiated CdSe/PVA Nanocomposites
- The Effect of Ultraviolet Ageing on the Flame Retardancy, Thermal Stability and Mechanical Properties of LGFPP/IFR
- Preparation and Characterization of a Biocomposite Based on Cork Microparticles in Poly(β-hydroxybutyrate)-co-Poly(β-hydroxyvalerate) Matrix
- Partially Filled Flow Simulation Using Meshfree Method for High Viscosity Fluid in Plastic Mixer
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Flow-Fiber Coupled Viscosity in Injection Molding Simulations of Short Fiber Reinforced Thermoplastics
- Effects of Cooling Ways on the Structure of Polypropylene Hollow Fiber Membranes Prepared by Stretching
- Fill Factor Effects in Highly-Viscous Non-Isothermal Rubber Mixing Simulations
- Morphology and Isothermal Crystallization Kinetics of Polypropylene/Poly(ethylene-co-vinyl alcohol) Blends
- Mechanical and Thermal Properties of Teak Wood Flour/Starch Filled High Density Polyethylene Composites
- Three-Dimensional, Non-Isothermal Simulations of the Effect of Speed Ratio in Partially-Filled Rubber Mixing
- Edge Effect in Hot Embossing and its Influence on Global Pattern Replication of Polymer-Based Microneedles
- Enhancing Flame Retardancy, Thermal Stability, Physical and Mechanical Properties of Polyethylene Foam with Polyphosphate Modified Expandable Graphite and Ammonium Polyphosphate
- Processing LDS-Circuit Boards by Selective Laser Sintering
- Structural and Optical Characteristics of Laser Irradiated CdSe/PVA Nanocomposites
- The Effect of Ultraviolet Ageing on the Flame Retardancy, Thermal Stability and Mechanical Properties of LGFPP/IFR
- Preparation and Characterization of a Biocomposite Based on Cork Microparticles in Poly(β-hydroxybutyrate)-co-Poly(β-hydroxyvalerate) Matrix
- Partially Filled Flow Simulation Using Meshfree Method for High Viscosity Fluid in Plastic Mixer
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
