Abstract
Thick film of Polystyrene (PS)/CdS semiconducting optical nanocomposite has been synthesized by dispersing nanofiller particles of CdS in PS matrix. The nanostructure of the CdS particles has been ascertained through X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). Small angle x-ray scattering analysis has been performed in order to ascertain nanocomposite character of the PS/CdS sample. Scanning Electron Microscopy (SEM) analyses of these samples have been carried out to establish the surface morphology. Optical Absorption Spectroscopy is used to measure the energy band gap of PS/CdS nanocomposite by using Tauc relation whereas Transient Plane Source Technique is used for the determination of thermal conductivity of the prepared samples. The phase transition temperature and elastic response of the prepared samples have been ascertained through Dynamic Mechanical Analyzer (DMA). This study reveals that the thermal conductivity, Young’s modulus and the toughness of the material are greatly influenced by the existence of interfacial energetic interaction between dispersed CdS nanofiller particles and matrix of PS.
Highlights
Polymer nanocomposites are of great industrial and scientific interest, since they offer the potential for tailoring on a new scale
The nanostructure of the cadmium sulfide (CdS) particles has been ascertained through X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM)
The phase transition temperature and elastic response of the prepared samples have been ascertained through Dynamic Mechanical Analyzer (DMA)
Summary
Polymer nanocomposites are of great industrial and scientific interest, since they offer the potential for tailoring on a new scale. This is true because of the possibility of creating composites with unique combinations of functionalities, such as thermally conducting composites with good mechanical properties that are optically clear Such properties can be realized because nanoparticles, with diameters distinctly below the Rayleigh scattering limit, still display their solid-state physical properties when embedded in transparent matrices. The fluorescence measurement shows that CdS nanocrystals and CdS-PMMA hybrids exhibit good optical properties In this way, in recent times, the industrial demand for higher performance polymers with faster processing times has caused polymers to be gradually replaced by different engineered polymeric nanocomposites. PS is considered as an excellent polymer suitable for various commercial and domestic applications In view of these facts here in the present paper, we demonstrate the simplest chemical method for the preparation of CdS/PS semiconducting optical nanocomposite. This study reveals that PS/CdS semiconducting optical nanocomposite shows excellent film formability, good transparency and interesting results
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