Assessment of Spectroscopic Characterization of Pure and Malachite Green Doped Polysulfone Samples by X-Ray Diffraction (XRD), UV- Visible and Scanning Electron Microscopy (SEM) Techniques

Polymers have strong dielectric properties when subjected to a field-temperature treatment because they may permanently store charge. The electret state and carrier mobility of polymers can be significantly changed by impregnating them with suitable dopants. When a low molecular weight organic component is doped into a polymer, the formation of a charge transfer connection between the acceptor and donor molecules improves the polymer’s electrical conductivity. Spectroscopic techniques are used to show how the structure of a pure polymer changes as the impurity ratio rises. In this experiment, the host polymer is polysulfone, while the dopant is malachite Green. In order to prepare samples of pure and malachite green doped Polysulfone in the form of foil, isothermal immersion was used. 4 gm Polysulfone was dissolved in 50 ml Dimethyl farmamide (DMF) solvent for the pure sample, whereas 15, 35, 65, and 110 mg Malachite Green were mixed with 4 gm Polysulfone for the doped sample, accordingly. The structural and optical characterization of these pure and doped samples was investigated using X-Ray Diffraction Spectroscopy (XRD), UV- Visible Spectroscopy, and Scanning Electron Microscope (SEM) techniques. Sharp and diffused peaks appear in both pure and doped polysulfone XRD diffractograms, corresponding to the crystalline and amorphous portions of the polymer, respectively. Due to the increase in doping ratio, the maximum intensity for pure samples is 18.380, while the maximum intensity for doped samples is 18.610, 18.890, 20.520, and 21.110, respectively, when studying the change of intensity with two theta angles. This finding supports the enhancement of polysulfone’s amorphous character. According to a UV-visible spectroscopy study, the transmittance of pure polysulfone decreases as the ratio of doping increases. In this situation, there is a clear decline in the intensity of transmittance of the pure sample, as well as some additional peaks. This activity shows that Charge Transfer Complexes (CTC) form between the donor and acceptor molecules, signifying that the Polysulfone polymer’s electrical properties have improved. Scanning Electron Microscopy was used to investigate the micro structural characteristics of clean and doped materials (SEM). The homogeneous dispersion of dopant malachite green and polysulfone is demonstrated in this work. The goal of this research is to see how the charge storage capacity of the polysulphone improves with different Malachite Green doping ratios.

Author(S) Details

Rashmi J. Nayak
Department of P. G. Studies and Research in Physics and Electronics, Rani Durgavati Vishwavidyalaya, Jabalpur, M.P., India.

P. K. Khare
Department of P. G. Studies and Research in Physics and Electronics, Rani Durgavati Vishwavidyalaya, Jabalpur, M.P., India.

J. G. Nayak
Department of Civil Engineering, Sandip Institute of Technology & Research Centre, Nashik, Maharashtra, India.

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