article · Results in Physics
Films based on a polymethyl methacrylate and polyethylene oxide polymer blend were fabricated by incorporating synthesised zinc manganese oxide and cadmium sulphide nanocomposites through solution casting. Incorporating these nanocomposites altered the structural, optical, and dielectric characteristics of the polymer matrix. Direct and indirect optical bandgap values narrowed across the doped materials, whilst the refractive index increased substantially. Both linear and nonlinear optical parameters increased after the nanocomposites were introduced, with a blend incorporating ten per cent cadmium sulphide exhibiting the highest optical values alongside a distinct violet colouration compared to the blue shades of other samples. Furthermore, dielectric evaluations revealed that a blend containing twenty per cent cadmium sulphide achieved the highest energy density. These property improvements suggest practical utility across optoelectronic components, photocatalytic systems, and electrical energy storage devices.
Enhancing the optical and electrical properties of flexible polymer blends is vital for creating better materials for advanced electronics. By introducing metal oxide and sulphide nanocomposites, the light absorption, refractive behaviour, and energy storage capacity of common polymers can be finely tuned. This supports the development of multifunctional materials required for responsive optical systems and compact energy storage components.
The observed enhancements in optical performance and energy density could benefit developers of optoelectronic components, photocatalytic systems, and energy storage devices. However, this work represents early-stage laboratory research focused on material synthesis and property characterisation via cast films. Practical translation will require fabricating operational device prototypes, testing durability under real-world working conditions, and establishing the scalability and environmental stability of the solution casting method.
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Herein, polymethyl methacrylate (PMMA)/ polyethylene oxide (PEO) blend doped with nanocomposite (1 − x) ZnMn2O4/xCdS samples were prepared through two steps, the first comprising nanocomposite (1 − x) ZnMn2O4/xCdS samples synthesizing, while the second was the incorporation of nanocomposites into the blend matrix, and finally the films were obtained through the casting solution method. Various techniques, such as X-ray diffraction, scanning electron microscopy, diffused reflection and impedance spectroscopy were used to determine the change in the PMMA/PEO structure after the inclusion of the nanocomposites. The direct and indirect optical bandgap values for the PMMA/PEO blend decreased from 5.04 and 4.8 eV to 4.99 and 4.7 eV, respectively, as the blend doped with (1 − x) ZnMn2O4/xCdS samples. At 600 nm, the refractive index of the blend was raised from 1.37 to 1.53 as it doped with 0.9 ZnMn2O4/0.1CdS sample. The linear and nonlinear optical parameters grow with the insertion of (1-x)ZnMn2O4/xCdS nanocomposites into the PMMA/PEO blend. Variation of CdS in the doped nanocomposites affects slightly the linear and nonlinear optical parameters of the host blend. Blend containing 10 % CdS has the highest linear and nonlinear optical parameters as compared with other doped blends. All of the blends exhibited different shades of blue color, except for the blend that contained 10 % CdS, which displayed a violet color. The effect of doping on the dielectric properties of different blends was also explored. Blend with 20 % CdS has the highest energy density. This improvement implies the use of prepared blends in different optoelectronic, photocatalytic and storage device applications.
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DOI: 10.1016/j.rinp.2024.107323
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