Electrical studies of low energy Ar9+ irradiated conducting polymer PANI–PVA

Himanshu, A. K.; Bandyopadhayay, S. K.; Sen, Pintu; Mondal, Nagendra Nath; Talpatra, A.; Taki, G. S.; Sinha, T. P.

doi:10.1016/j.radphyschem.2010.09.007

Cited by 18 publications

(6 citation statements)

References 9 publications

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“…Standard deviations (σ) have also been included in the table. The trend shows the average dielectric constant is decreasing with increasing frequency, in agreement with other polymer dielectric behaviour such as [29]. Device 1 produced a higher than expected capacitance considering its dimensions; it is believed that there was poor adhesion between the electrodes and the device, and hence a higher contact resistance and interface capacitance contributing to the measured value.…”

Section: Resultssupporting

confidence: 82%

Electrical characterisations of plasma polyermised linalyl acetate

Anderson

Jacob

2012

Materials Science and Engineering: B

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Thin films of plasma polymerised linalyl acetate (PLA) were fabricated and their electrical properties investigated. The high frequency dielectric constant was determined using the split post dielectric resonator (SPDR) technique at frequencies of 10 GHz and 20 GHz and compared with the low frequency dielectric constant found from capacitive measurements of metal-insulator-metal (MIM) structures. Dielectric constants of 2.39 and 2.43 resulted from each of the respective techniques, in good agreement with each other. The J-V characteristics of MIM structures fabricated at various RF power levels were then investigated in order to determine the resistivity and DC conduction mechanism of the PLA thin films. From these data, the predominate mechanism of charge transport in the high voltage region was found to be consistent with Richardson-Schottky conduction, and the resistivity of the thin films found to increase with increasing RF power.

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Section: Resultssupporting

confidence: 82%

Electrical characterisations of plasma polyermised linalyl acetate

Anderson

Jacob

2012

Materials Science and Engineering: B

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“…When frequency reaches the characteristic frequency (ω =1/τ), the dielectric constant drops (relaxation process). At very high frequencies (ω>>1/τ), dipoles can no longer follow the field and ε′ ≈ ε ∞ (highfrequency value of ε′) [36]. This behavior is also found in other compounds studied by us [37][38][39][40][41].…”

Section: Resultssupporting

confidence: 70%

Structural And Impedance Spectroscopy Analysis Of Ba(Fe0.5Nb0.5)O3-BaTiO3 ceramic System

Singh¹,

Kumar²,

Rai

et al. 2012

Adv. Mater. Lett.

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Polycrystalline samples of BaFe 0.5 Nb 0.5 O 3 and (1-x)Ba(Fe 0.5 Nb 0.5 )O 3 -xBaTiO 3 , [referred as BFN and BFN-BT respectively] (x = 0.00, 0.15 and 0.20) have been synthesized by a high-temperature solid-state reaction technique. The formation of the compound was checked by an X-ray diffraction (XRD) technique. The microstructure analysis was done by scanning electron micrograph. The spectroscopic data presented in impedance plane show the grain and grain boundary contributions towards electrical processes in the form of semi-circular arcs. Detailed studies of dielectric and impedance properties of the materials in a wide range of frequency (100Hz-5MHz) and temperatures (30-282°C) showed that these properties are strongly temperature and frequency dependent.

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“…As illustrated in Figure 4, the viscosity of pure PVA emulsion is 290 MPaÁs, the emulsion viscosity increases with the increase in the amount of PANI, the result is similar to that of Himanshu et al 46 The reason is that the PVA molecular chain exhibits excellent flexibility and the entanglement; in addition, strong hydrogenbonding interaction could be generated between certain -NH-on the PANI macromolecular chain and -OH on the PVA macromolecular chain, improving and optimizing the viscosity of PVA emulsion sufficiently. An excessive increase in the amount of PANI leads to a significant decrease in the viscoelastic properties of the emulsion.…”

Section: Viscosity Of Spinning Solutionsupporting

confidence: 83%

Preparation, structure and electrochromic behavior of PANI/PVA composite electrospun nanofiber

Meng

Wang

Xin

et al. 2018

Textile Research Journal

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In this study, the preparation of polyaniline/polyvinyl alcohol (PANI/PVA) emulsion and the fabrication of PANI/PVA nanocomposite and electrochromic device are presented systematically. The surface morphologies, chemical structural and mechanical properties of the PANI/PVA nanofibers were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and instrumental equipment. Four PANI/PVA composites with different PANI concentrations (i.e. 0 wt%, 0.2 wt%, 0.4 wt%, 0.6 wt%) were prepared to investigate the effects of PANI content on the electrochemical properties of the composites. Electrochromic properties of these PANI/PVA electrospun composite nanofibers are systematically characterized by an electrochemical workstation. Cyclic voltammetry was conducted to measure the electrochemical behavior of the PANI/PVA electrospun composite nanofibers at scanning speeds of 5 mV/s, 20 mV/s, 50 mV/s and 100 mV/s; it could be found that the redox peaks almost disappear. The discoloration of PANI/PVA composite electrospun nanofiber presents the color changing among the three mainstream colors of green, yellow, and blue.

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Electrical studies of low energy Ar9+ irradiated conducting polymer PANI–PVA

Cited by 18 publications

References 9 publications

Electrical characterisations of plasma polyermised linalyl acetate

Electrical characterisations of plasma polyermised linalyl acetate

Structural And Impedance Spectroscopy Analysis Of Ba(Fe0.5Nb0.5)O3-BaTiO3 ceramic System

Preparation, structure and electrochromic behavior of PANI/PVA composite electrospun nanofiber

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