The PEO/PVP polymers blend films at different wt % of PVP are prepared by solution casting method using methanol as a solvent. The samples were characterized by FT-IR to confirm the complexation between the two polymers and the peak region around 1230–980 cm−1 corresponds to C–O–C symmetric and asymmetric stretchings and changes in band positions was observed in PEO/PVP polymer blend. The Field Emission Scanning Electron Microscope (FESEM) images shows morphology changes from roughness to smoothness with cracks. The UV-visible spectroscopy reveals the red shift from 190 nm to 220 nm in the ultra violet region is attributed to π → π* transition. The direct and indirect optical band gaps were determined and found decrease from 4.99 eV to 4.62 eV with increased PVP wt % to 50:50. The dielectric constant observed decreases with increasing the frequency
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26 June 2020
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON PHYSICS OF MATERIALS AND NANOTECHNOLOGY ICPN 2019
19–21 September 2019
Mangalore, India
Research Article|
June 26 2020
Morphology, optical band gap and dielectric properties of PEO/PVP polymer blend film
Mahadevappa Basappa;
Mahadevappa Basappa
Department of Physics, Mangalore University
, Mangalagangothri -574199, India
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Lakshmayyaguddi Yesappa;
Lakshmayyaguddi Yesappa
Department of Physics, Mangalore University
, Mangalagangothri -574199, India
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Shankar Pawar Ashokkumar;
Shankar Pawar Ashokkumar
Department of Physics, Mangalore University
, Mangalagangothri -574199, India
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Hebri Vijeth;
Hebri Vijeth
Department of Physics, Mangalore University
, Mangalagangothri -574199, India
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Hundekal Devendrappa
Hundekal Devendrappa
*
Department of Physics, Mangalore University
, Mangalagangothri -574199, India
*Corresponding author email: [email protected]
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*Corresponding author email: [email protected]
AIP Conf. Proc. 2244, 080018 (2020)
Citation
Mahadevappa Basappa, Lakshmayyaguddi Yesappa, Shankar Pawar Ashokkumar, Hebri Vijeth, Hundekal Devendrappa; Morphology, optical band gap and dielectric properties of PEO/PVP polymer blend film. AIP Conf. Proc. 26 June 2020; 2244 (1): 080018. https://doi.org/10.1063/5.0009198
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