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 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.

High-performance ultralow dielectric constant carbon-bridged mesoporous organosilica films for advanced interconnects

2014 ◽  
Vol 2 (32) ◽  
pp. 6502-6510 ◽  
Author(s):  
Tao Jiang ◽  
Bao Zhu ◽  
Shi-Jin Ding ◽  
Zhongyong Fan ◽  
David Wei Zhang
Keyword(s):  
Dielectric Constant ◽  
Ethylene Oxide ◽  
Propylene Oxide ◽  
High Performance ◽  
Mesoporous Organosilica ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Poly Propylene

Mesoporous organosilica (MO) films are prepared using precursor 1,2-bis(triethoxysilyl)ethane (BTEE) and porogen template poly(ethylene oxide)–poly(propylene oxide)–poly(ethylene oxide) (P123).

Structural and electrical properties of lithium cobalt nanoferrites prepared by sol–gel method

2015 ◽  
Vol 29 (01) ◽  
pp. 1450255
Author(s):  
Victory Maisnam ◽  
Mamata Maisnam ◽  
Sumitra Phanjoubam
Keyword(s):  
Dielectric Constant ◽  
Electrical Properties ◽  
Dielectric Loss ◽  
Ac Conductivity ◽  
Sol Gel ◽  
Interfacial Polarization ◽  
Frequency Variation ◽  
Gel Method ◽  
Sol Gel Method ◽  
Lithium Cobalt

Lithium cobalt nanoferrites having the compositional formula Li 0.5-x/2 Co x Fe 2.5-x/2 O 4 with x varying from 0.00 to 0.12 in steps of 0.03 were prepared by the chemical sol–gel method. Samples were heated at two different temperatures namely 300°C and 500°C for 4 h. Structural characterization of the samples was done using X-ray diffraction (XRD) technique and confirmed the formation of single phase with spinel structure in all the samples. From the XRD data, the lattice parameter was calculated and found to range from 82.87–83.35 nm while the crystallite size was found to be in the range 17–34 nm. Microstructural studies were carried out using the Scanning Electron Microscopy and revealed the microstructures with grain size ranging from 35–70 nm. Electrical properties like dielectric constant, dielectric loss and AC conductivity for these nanoferrites were investigated. The frequency variation of room temperature dielectric constant, dielectric loss and AC conductivity were studied in the frequency range 100 Hz–1 MHz, and a dispersive behavior was observed, which has been attributed to the Maxwell–Wagner type of interfacial polarization.

scholarly journals Thermoreversible gelation in poly(ethylene oxide)/carbon black hybrid melts

Polymer ◽  
2014 ◽  
Vol 55 (24) ◽  
pp. 6278-6281 ◽  
Author(s):  
Antonios Kelarakis ◽  
Marta J. Krysmann ◽  
Emmanuel P. Giannelis
Keyword(s):  
Carbon Black ◽  
Ethylene Oxide ◽  
Thermoreversible Gelation ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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