Fabrication of polymer nanocomposite-based fractional-order capacitor: a guide

Shah, Zaid Mohammad; Khanday, Farooq Ahmad; Malik, Gul Faroz A.; Jhat, Zahoor Ahmad

doi:10.1016/b978-0-32-390090-4.00020-2

Cited by 5 publications

(3 citation statements)

References 100 publications

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“…Figure 4 b), which do not percolate in this concentration range. In addition, 2D materials such as GNPs have a 2-fold higher theoretical EPT than 1D fillers [ 46 ] requiring concentrations well above 2%, as reported for GNP-CNF [ 47 ] and GNP-lyocell [ 48 ].…”

Section: Resultsmentioning

confidence: 99%

Advanced Cellulose–Nanocarbon Composite Films for High-Performance Triboelectric and Piezoelectric Nanogenerators

et al. 2023

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Natural polymers such as cellulose have interesting tribo- and piezoelectric properties for paper-based energy harvesters, but their low performance in providing sufficient output power is still an impediment to a wider deployment for IoT and other low-power applications. In this study, different types of celluloses were combined with nanosized carbon fillers to investigate their effect on the enhancement of the electrical properties in the final nanogenerator devices. Cellulose pulp (CP), microcrystalline cellulose (MCC) and cellulose nanofibers (CNFs) were blended with carbon black (CB), carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs). The microstructure of the nanocomposite films was characterized by scanning electron and probe microscopies, and the electrical properties were measured macroscopically and at the local scale by piezoresponse force microscopy. The highest generated output voltage in triboelectric mode was obtained from MCC films with CNTs and CB, while the highest piezoelectric voltage was produced in CNF-CNT films. The obtained electrical responses were discussed in relation to the material properties. Analysis of the microscopic response shows that pulp has a higher local piezoelectric d33 coefficient (145 pC/N) than CNF (14 pC/N), while the macroscopic response is greatly influenced by the excitation mode and the effective orientation of the crystals relative to the mechanical stress. The increased electricity produced from cellulose nanocomposites may lead to more efficient and biodegradable nanogenerators.

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Section: Resultsmentioning

confidence: 99%

Advanced Cellulose–Nanocarbon Composite Films for High-Performance Triboelectric and Piezoelectric Nanogenerators

et al. 2023

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“…In the presented case, a decrease in volume resistivity occurs when the 3% level is reached. It is most likely due to exceeding of percolation threshold [ 84 ] of the composite. This means that the level of filler concentration has exceeded the level where the material begins to lose its electrical insulating ability due to the excessive amount of additives, associated with the formation of a conductive pathway along their surface [ 85 , 86 ].…”

Section: Resultsmentioning

confidence: 99%

A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles

et al. 2023

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Recently, polyurethanes (PURs) have become a very promising group of materials with considerable utilization and innovation potential. This work presents a comprehensive analysis of the changes in material properties important for PUR applications in the electrical industry due to the incorporation of magnesium oxide (MgO) nanoparticles at different weight ratios. From the results of the investigations carried out, it is evident that the incorporation of MgO improves the volume (by up to +0.5 order of magnitude) and surface (+1 order of magnitude) resistivities, reduces the dielectric losses at higher temperatures (−62%), improves the thermal stability of the material, and slows the decomposition reaction of polyurethane at specific temperatures (+30 °C). In contrast, the incorporation of MgO results in a slight decrease in the dielectric strength (−15%) and a significant decrease in the mechanical strength (−37%).

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“…The different spatial arrangement of the ester groups of the MMA moieties is used to distinguish PMMA as syndiotactic, isotactic, or atactic (Figure ). The tacticity of PMMA is also responsible for determining the amorphous nature and glass transition temperatures ( T g ); syndiotactic PMMA has the highest T g (130 °C), followed by atactic (120 °C) and isotactic (55 °C) . The higher stability of the syndiotactic and atactic polymers are inherently responsible for increasing the T g .…”

Section: Polymerization Of Methyl Methacrylate: Properties and Scopementioning

confidence: 99%

Methyl Methacrylate-Based Copolymers: Recent Developments in the Areas of Transparent and Stretchable Active Matrices

et al. 2022

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The recent advancements of poly(methyl methacrylate) (PMMA) as a transparent flexible polymer material have been utilized in numerous areas of engineering and materials science. PMMA-based copolymers demonstrate outstanding mechanical and optical properties owing to high transparency, lightweight nature, high impact resistance, and stress relaxation across glass transition temperature. These copolymers have unique characteristics of retaining optical and microstructural integrities during successive bending or elongations which make them an attractive choice for materials of stretchable electronics. In particular, there has been an escalated rise in the use of methyl methacrylate (MMA)-based transparent and stretchable copolymer films during the recent decades. Therefore, we have highlighted these recent developments into a comprehensive review in order to aid the future progress in these diverse fields. Herein, we have highlighted the scope of MMA as an important building block for the synthesis of highly transparent and flexible materials. The synthetic pathways of these copolymer materials and the resulting mechanical properties have been discussed. Moreover, the immense scope of these copolymer films has been highlighted by virtue of their applications in various industries.

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Fabrication of polymer nanocomposite-based fractional-order capacitor: a guide

Cited by 5 publications

References 100 publications

Advanced Cellulose–Nanocarbon Composite Films for High-Performance Triboelectric and Piezoelectric Nanogenerators

Advanced Cellulose–Nanocarbon Composite Films for High-Performance Triboelectric and Piezoelectric Nanogenerators

A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles

Methyl Methacrylate-Based Copolymers: Recent Developments in the Areas of Transparent and Stretchable Active Matrices

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