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- W2760761121 abstract "Poly(2-ethyl-2-oxazoline) [PEOX] is blended with polyvinylpyrrolidone [PVP] having a relatively high dielectric constant to improve the optical and electrical properties of the material. PEOX-PVP polymer blends with 0, 20, 40, 60, and 80 wt% PVP are characterized by their structural, optical, electrical and dielectric properties. SEM images and XRD spectra show that PEOX and PVP have a good miscibility and compatibility. XRD also confirms the amorphous structure of the samples. FTIR spectra indicate the presence of hydrogen bonding between PEOX and PVP. The optical energy band gap, Egopt, and the width of the band tail of localized states in the forbidden band gap, ΔE, as determined by UV–Vis spectroscopy, are changing with PVP content. Electrical and dielectric properties are measured at frequencies from 10 Hz to 8 MHz using LCR meter. The dielectric constant, the dielectric loss, and the loss tangent (tanδ) decrease, whereas the AC conductivity increases with increasing frequency. PEOX:PVP (80:20 wt%) is an optimum blend with superior properties as compared with pure PEOX. This flexible and high-dielectric-constant polymer blend may have potential application in energy storage." @default.
- W2760761121 created "2017-10-06" @default.
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- W2760761121 date "2017-12-01" @default.
- W2760761121 modified "2023-09-25" @default.
- W2760761121 title "Influence of polyvinylpyrrolidone on optical, electrical, and dielectric properties of poly(2-ethyl-2-oxazoline)-polyvinylpyrrolidone blends" @default.
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- W2760761121 doi "https://doi.org/10.1016/j.molliq.2017.09.086" @default.
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