Optical Analysis and UV-Blocking Filter of Cadmium Iodide-Doped Polyvinyl Alcohol Polymeric Composite Films: Synthesis a
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Optical Analysis and UV‑Blocking Filter of Cadmium Iodide‑Doped Polyvinyl Alcohol Polymeric Composite Films: Synthesis and Dielectric Properties A. Bouzidi1 · W. Jilani1,2 · I. S. Yahia3,4,5 · H. Y. Zahran3,4,5 · M. A. Assiri6 Received: 7 March 2020 / Accepted: 1 April 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Polymer electrolyte films containing polyvinyl alcohol (PVA) with various C dI2 inorganic salt contents are prepared using an ultrasonic wave and a casting method for studying the effect of cadmium iodide ( CdI2) additions on the microstructure, optic and dielectric characteristics of the PVA film. Incorporating CdI2 inorganic salt affects the microstructural parameters of the proposed films. UV–Vis–NIR optical spectroscopy explores the influence of the inorganic CdI2 salt content on the optical characteristics. For 3.7 wt% C dI2 inorganic salt sample, each of the materials is a possible candidate for UV-shielding applications, the prepared polymeric electrolyte films begin a blocking light between 190 and 276 nm of UV–Vis light. The gap energy in the visible region attributes to a reduction in the size of the crystallite, with increasing C dI2 concentrations. The band gaps enhance the behavior of light absorption and the materials examined were suited for optical UV protection systems. The ionic conductivity of the polymer electrolyte films is studied as a function of the added CdI2 inorganic salt. The AC impedance in PVA polymeric electrolyte film behaviors also depends on the incorporation of C dI2 inorganic salt which improves their dielectric parameters. C dI2/PVA composite films showed a new trend in the electrical and optical behavior for many applications especially UVC light blocking. Graphic Abstract 60
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Keywords CdI2-doped PVA · Polymeric composite films · UV–Vis–NIR properties · Ionic conductivity · AC impedance * I. S. Yahia [email protected]; [email protected]; [email protected] Extended author information available on the last page of the article
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1 Introduction Polymer-based electrolytes often are researched for both fundamental and practical reasons. Not only do polymer electrolytes incorporate their beneficial properties with polymers, but they also show some new features that do not include single-stage materials [1]. The main objective of material science is to produce new materials with properties and understand the physical and chemical processes that decide these properties in a specific application. Doping polymers with different doping rates are one way to change the properties of matter [2]. Through adding an appropriate dopant, the properties of a polymer can be substantially improved and regulated [3]. Polymers are continuously performed due to
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