scholarly journals Effect of Potassium Alum Salt Particles on the Activation Energy of Poly(ethylene oxide) Doped with Conductive Carbon Black (CB) Nanoparticles

2022 ◽  
Vol 58 (4) ◽  
pp. 37-46
Author(s):  
Abeer Adaileh ◽  
Mohammed Al-Tweissi ◽  
Husam Miqdad
Keyword(s):  
Thin Films ◽  
Activation Energy ◽  
Carbon Black ◽  
Ethylene Oxide ◽  
Filler Content ◽  
Potassium Alum ◽  
Conductive Carbon Black ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Frequency Temperature

The electrical properties of conductive carbon black (CB) nanoparticles (0.1wt percent) doped thin films made of poly(ethylene oxide) (PEO) filled with varying amounts of the electrolyte potassium alum salt and doped with conductive carbon black (CB) nanoparticles (0.1wt percent) have been investigated. The dependence of the activation energy of the composites on frequency, temperature, and filler content was studied using the AC impedance technique. The current research looked at how activation energy changed with frequency (200-1000 kHz) and temperature (30-55oC) for composites with varied potassium alum salt concentrations: 0, 2, 4, 8, 12, and 16 wt. percent. The activation energy (Ea) values measured exhibited frequency, temperature, and filler content relationships. According to polarization processes, the activation energy of the produced sheets decreases with the potassium alum salt content in the composite and decreases with the temperature. With increasing frequency, the activation energy of the produced thin films decreases.

scholarly journals Effect of Potassium Alum and Carbon Black Nanoparticles on Casted Peo Composite: Phase Angle, Dielectric Constant, Impedance and AC Conductivity

2021 ◽  
Vol 15 ◽  
pp. 1687-1694
Author(s):  
Husam Miqdad
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Carbon Black ◽  
Ac Conductivity ◽  
Electrical Characteristics ◽  
Field Frequency ◽  
Potassium Alum ◽  
Conductive Carbon Black ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The electrical characteristics of hybrid polymer thin films consisting of conductive carbon black (CB) nanoparticles (0.1wt%) doped in poly(ethylene oxide) (PEO) filled with electrolyte potassium alum salt at varied concentrations were studied. For varied potassium alum concentrations and fixed content of conductive carbon black of concentration (0.1 wt. percent), the AC electrical characteristics were studied in the frequency range (3kHz - 5MHz) and temperature range (30 oC - 55 oC). Thin film physical constants such as dielectric constant, dielectric loss, AC conductivity, and impedance have been recorded. These measured amounts were discovered to fluctuate with potassium alum concentration, applied field frequency, and temperature. With increasing potassium alum content, frequency, and temperature, the AC conductivity (ac) increases. Dielectric constant (ε') and dielectric loss (ε'') of the composites increase with potassium alum concentration and decrease with frequency.

scholarly journals Effect of Environmental Humidity on the Ionic Transport of Poly(ethylene Oxide) Thin Films by Local Dielectric Spectroscopy

2019 ◽  
Author(s):  
Paul Markus ◽  
Daniel E Martínez-Tong ◽  
Georg Papastavrou ◽  
Angel Alegria
Keyword(s):  
Thin Films ◽  
Ethylene Oxide ◽  
Amorphous Phase ◽  
Dielectric Spectroscopy ◽  
Ionic Transport ◽  
Oxide Thin Films ◽  
Environmental Humidity ◽  
Dielectric Contrast ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

<div><div><div><p>The effect of humidity on the ionic transport in the amorphous phase of poly(ethylene oxide) thin films has been studied by via local dielectric spectroscopy. We explored a controlled humidity range between 15 %RH and 50 %RH. AFM-based local dielectric imaging allowed to obtain simultaneously the thin films topography and the corresponding dielectric contrast maps. No humidity effect on the film topography was observed whereas large variation of the dielectric signal could be detected. In addition, we observed a clear dielectric contrast in different locations on the thin film surface. At selected regions with high contrast in the dielectric maps, we performed nanoDielectric Spectroscopy (nDS) measurements covering the frequency range from 10 Hz to 100 kHz. By modeling these spectroscopy results, we quantified the conductivity of the amorphous phase of the semicrystalline poly(ethylene oxide) films. The crystalline fraction of the PEO thin films was extracted and found to be about 36%, independently of humidity. However, the average conductivity increased drastically from 2×10-10 to 5×10-9 S/cm, by changing environmental humidity in the explore %RH range.</p></div></div></div>

Systematic Control of Self-Seeding Crystallization Patterns of Poly(ethylene oxide) in Thin Films

2018 ◽  
Vol 51 (5) ◽  
pp. 1626-1635 ◽  
Author(s):  
Binghua Wang ◽  
Shaohua Tang ◽  
Yan Wang ◽  
Changyu Shen ◽  
Renate Reiter ◽  
...  
Keyword(s):  
Thin Films ◽  
Ethylene Oxide ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Systematic Control

scholarly journals Effect of environmental humidity on the ionic transport of poly(ethylene oxide) thin films, investigated by local dielectric spectroscopy

Soft Matter ◽  
2020 ◽  
Vol 16 (13) ◽  
pp. 3203-3208 ◽  
Author(s):  
Paul Markus ◽  
Daniel E. Martínez-Tong ◽  
Georg Papastavrou ◽  
Angel Alegria
Keyword(s):  
Thin Films ◽  
Relative Humidity ◽  
Ethylene Oxide ◽  
Dielectric Spectroscopy ◽  
Ionic Transport ◽  
Oxide Thin Films ◽  
Environmental Humidity ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The laterally-resolved conductivity of PEO thin films increases with relative humidity, as determined by local dielectric spectroscopy: an AFM-based electrical technique.

β-NMR measurements of molecular-scale lithium-ion dynamics in poly(ethylene oxide)-lithium-salt thin films

2017 ◽  
Vol 146 (24) ◽  
pp. 244903 ◽  
Author(s):  
Iain McKenzie ◽  
David L. Cortie ◽  
Masashi Harada ◽  
Robert F. Kiefl ◽  
C. D. Philip Levy ◽  
...  
Keyword(s):  
Thin Films ◽  
Ethylene Oxide ◽  
Lithium Salt ◽  
Lithium Ion ◽  
Ion Dynamics ◽  
Molecular Scale ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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