Electrical Conductivity of Nanocomposites Based on Low-Density Polyethylene and Cu2S Nanoparticles

Nuriev, M. A.; Магеррамов, А. М.; Shukyurova, A. A.

doi:10.3103/s1068375518010118

Cited by 5 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The value of the activation energy is in good agreement with other previous work. [78,79] Figure 10 shows the relationship between ln[σ AC ] and ln(ω) for a PVA/5.0 wt% TiO 2 film at various temperatures. More charge carriers released from traps and/or improved mobility across the PVA matrix's amorphous region may both contribute to the increase in the with increasing temperature.…”

Section: Dielectric Partmentioning

confidence: 99%

Enhancement of the Dielectric Properties of Polyvinyl Alcohol by Adding TiO₂Nanoparticles

El-Gamal

2022

Physica Status Solidi (a)

View full text Add to dashboard Cite

Dielectric polymeric materials with high dielectric performance have recently been investigated for potential applications in a wide range of fields, especially electrical engineering and microelectronics, and in storage with a high energy density. [1,2] A polymer dielectric material is marked by mechanical flexibility, compatibility with polymers used to support electronic circuits, good processing performance, and low cost. [3] Low dielectric loss and high dielectric constant (ε 0 ) are required for microelectronic applications of these materials.Unfortunately, achieving a high ε 0 of a polymer dielectric material is difficult, in comparison to dielectric oxides, polymers have a very low ε 0 value by nature. Polyvinyl alcohol (PVA) is a promising choice for a good polymer dielectric among the other polymer gate insulators because of its high dielectric constant, about 7.8. [4] Also, PVA has been used in a variety of industries due to its strong thermal stability, water-solubility, chemical resistance to oils, and chemical stability, as well as the ability to form films. [5,6] There have been several efforts to develop high ε 0 polymer matrix composites. Filling a polymer with nano metal oxides that have a high ε 0 value is a viable technique to create flexible composites with improved ε 0 values. Nano metal oxides of transition elements such as copper, zinc, titanium, and others improve the physical and mechanical properties of PVA, and its reactive hydroxyl groups aid in the dispersion of nano-oxides. [7] The chemical nature of the nanofillers, as well as concentration, shape, size, and distribution, all influence composite properties. [8] TiO 2 nanoparticles (NPs) have gained attention among the many distinct forms of nanofillers, because it can exhibit high ε 0 (10 2 ) at room temperature and can use as high a permittivity nanofiller to enhance the ε 0 values of PVA composites. [9][10][11] Also, its chemical stability, excellent optical, refractive index, nontoxicity, low cost, and physicochemical features have sparked a lot of research. [12][13][14][15] TiO 2 NPs can be used in a variety of applications like photovoltaics, photocatalysis, solar energy conversion, and ultrasonic sensors. [16][17][18][19][20][21] Although much research has been done on the mechanical, thermal, and structural characteristics of PVA/TiO 2 nanocomposites in recent years. [22][23][24] Hdidar et al. looked at how rutile TiO 2 adding affected the thermal and electrical properties of PVA nanocomposite samples. [25] Shehap et al. investigated the influence of laser irradiation on the optical and structural features of TiO 2 /PVA. [26] It uses an appealing technique to investigate the specific electrical conductivity and mechanism of TiO 2 tiny polaron hopping with distinct phases inhibited by PVA polymer. Yang used a solution casting process to save PVA/TiO 2 composite and described it as suitable for use in a methanol fuel cell. [27] Wang et al. [28] recently described the presence of PVA, a regulated crystalline of titanium dioxide...

show abstract

Section: Dielectric Partmentioning

confidence: 99%

Enhancement of the Dielectric Properties of Polyvinyl Alcohol by Adding TiO₂Nanoparticles

El-Gamal

2022

Physica Status Solidi (a)

View full text Add to dashboard Cite

show abstract

“…The synchronous increase in n and μ after Se doping is beneficial for the enhancement in σ at RT. To obtain further insight into the mechanism of enhanced σ after Se doping, the activation energy of electrical resistivity (Ea) was estimated by the following Arrhenius equation [40]:…”

Section: Resultsmentioning

confidence: 99%

“…The synchronous increase in n and μ after Se doping is beneficial for the enhancement in σ at RT. To obtain further insight into the mechanism of enhanced σ after Se doping, the activation energy of electrical resistivity (E a ) was estimated by the following Arrhenius equation [ 40 ]:

where ρ is electrical resistivity, ρ 0 is the temperature-dependent constant, and k B is the Boltzmann constant. The plot of ln ρ vs. 1/T in the range of 300 K < T < 423 K has two linear portions with different slopes corresponding to E a1 and E a2 .…”

Section: Resultsmentioning

confidence: 99%

“…The plot of ln ρ vs. 1/T in the range of 300 K < T < 423 K has two linear portions with different slopes corresponding to E a1 and E a2 . As shown in Figure 4 b and Table S1 , E a1 and E a2 decrease with increasing y, indicating that the Fermi level approaches the valance band and the band structure has been altered [ 40 , 41 ], which contributes to the electrical conduction. To sum up, we deduce that the increase in σ can be attributed to the increased content of Cu 1.96 S, which possesses a higher Cu vacancy concentration, and is also simultaneously affected by the movement of the Fermi level.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Greatly Enhanced Thermoelectric Performance of Flexible Cu2−xS Composite Film on Nylon by Se Doping

Zuo,

Han,

Wang

et al. 2024

Nanomaterials

View full text Add to dashboard Cite

In this work, flexible Cu2−xS films on nylon membranes are prepared by combining a simple hydrothermal synthesis and vacuum filtration followed by hot pressing. The films consist of Cu2S and Cu1.96S two phases with grain sizes from nano to submicron. Doping Se on the S site not only increases the Cu1.96S content in the Cu2−xS to increase carrier concentration but also modifies electronic structure, thereby greatly improves the electrical properties of the Cu2−xS. Specifically, an optimal composite film with a nominal composition of Cu2−xS0.98Se0.02 exhibits a high power factor of ~150.1 μW m−1 K−2 at 300 K, which increases by ~138% compared to that of the pristine Cu2-xS film. Meanwhile, the composite film shows outstanding flexibility (~97.2% of the original electrical conductivity is maintained after 1500 bending cycles with a bending radius of 4 mm). A four-leg flexible thermoelectric (TE) generator assembled with the optimal film generates a maximum power of 329.6 nW (corresponding power density of 1.70 W m−2) at a temperature difference of 31.1 K. This work provides a simple route to the preparation of high TE performance Cu2-xS-based films.

show abstract

“…The authors [26] have investigated the electroconductivity of nanocomposites on the basis of low density polyethylene with nanoparticles of Cu 2 S. The temperature dependences of the electroconductivity of LDPE and Cu 2 S were explored. The authors revealed that the temperature dependence of the electroconductivity beginning with a definite temperature was described with equation σ=σ 0 •exp(-E/kT) to comply with the Arrhenius view on several sites depending on lgρ=ƒ(10 3 /T) with various activation energy values.…”

Section: Influence Of the Nature And Quantity Of Fillers On Electrophmentioning

confidence: 99%

On Preparation of Polymer Composites With Improved Electrophysical and Physical-Mechanical Properties

Kakhramanov¹,

Allahverdiyeva²,

Nurullayeva³

2019

Chemical Problems

View full text Add to dashboard Cite

The work deals with the results of analytical review of the development and research of polymer composite materials with improved electro-physical and physical-mechanical properties. It found that the selection of special fillers, their variation by quantity and particle sizes in the polymer matrix can essentially affect the electro-conductivity of material and thereby regulate their electret properties on the whole. It revealed that the use of traditional fillers of carbon-black, graphite, minerals, metals, etc. in the composition of thermoplastics, reactoplastics and rubber makes it possible to prepare antistatic products, electromagnetic protective coatings, resistors, various types of current-conducting materials. The use of various lightweight fillers allows preparing lowdensity composites with higher physical-mechanical and electret properties. The spheroplastics based on siloxane elastomer began gaining a larger popularity. There is the data on carbon-blackfilled composite materials based on polyolefins which, at definite ratios, allow preparing the electroconductive products. A certain place in the review is given to the use of highly dispersed metal powders for the improvement of the electret characteristics of composites. Much attention is paid to the investigation of nanofilled composites with the use of large set of the dispersed minerals. The use of hybride polymer nanocomposites opens up new perspectives for their wider use in the production of current-conductive materials. The possibility of chemical binding of mineral filler particles with polymer matrix using the binders with conjugated double bonds provides innovative approaches to the creation of high-strength and heat-resistant electroconductive composites. It becomes obvious that the most perspective direction of preparation of materials with high electret properties must be based on mechanical-chemical synthesis of composite materials.

show abstract

Electrical Conductivity of Nanocomposites Based on Low-Density Polyethylene and Cu2S Nanoparticles

Cited by 5 publications

References 10 publications

Enhancement of the Dielectric Properties of Polyvinyl Alcohol by Adding TiO₂Nanoparticles

Enhancement of the Dielectric Properties of Polyvinyl Alcohol by Adding TiO₂Nanoparticles

Greatly Enhanced Thermoelectric Performance of Flexible Cu2−xS Composite Film on Nylon by Se Doping

On Preparation of Polymer Composites With Improved Electrophysical and Physical-Mechanical Properties

Contact Info

Product

Resources

About

Electrical Conductivity of Nanocomposites Based on Low-Density Polyethylene and Cu2S Nanoparticles

Cited by 5 publications

References 10 publications

Enhancement of the Dielectric Properties of Polyvinyl Alcohol by Adding TiO2Nanoparticles

Enhancement of the Dielectric Properties of Polyvinyl Alcohol by Adding TiO2Nanoparticles

Greatly Enhanced Thermoelectric Performance of Flexible Cu2−xS Composite Film on Nylon by Se Doping

On Preparation of Polymer Composites With Improved Electrophysical and Physical-Mechanical Properties

Contact Info

Product

Resources

About

Enhancement of the Dielectric Properties of Polyvinyl Alcohol by Adding TiO₂Nanoparticles

Enhancement of the Dielectric Properties of Polyvinyl Alcohol by Adding TiO₂Nanoparticles