Improving the dielectric properties of poly(vinylidene fluoride) composites by using poly(vinyl pyrrolidone)-encapsulated polyaniline nanorods

Abstract

A promising PVDF-based dielectric polymer nanocomposite based on easily dispersed and poly(vinyl pyrrolidone)-encapsulated polyaniline nanorods (dPANI@PVP) was fabricated and displayed a high dielectric constant and low dielectric loss.

Physico-Mechanical, Dielectric, and Piezoelectric Properties of PVDF Electrospun Mats Containing Silver Nanoparticles

“…Many authors reported improvements in the dielectric constant of nanocomposites composed of PVDF, as well as other polymers, and various inorganic nanoparticle fillers [3,12,19,26,27,[29][30][31][32][33][34][35][36][37]. Some of these studies reported on nanocomposites containing PVDF and silver nanoparticles [12,19,29,30,36].…”

“…Higher values of ε′ over ε″ suggests that the PVDF/AgNPs composites might be anticipated for energy storage media applications. To achieve the highest electrical energy storage capacity (Umax = ε′ Eb 2 /2), composites should enjoy both large ε′ and high dielectric breakdown strength (Eb) [34][35][36].…”

Improvement of insulation effectiveness of natural rubber by adding hydroxyl-functionalized barium titanate nanoparticles

“…The agglomeration of fillers agglomeration tends to form conductive pathways which in turn increase the dielectric loss and the leakage current [14]. Therefore, in order to boost the dielectric properties it is vital to obtain a homogeneous microstructure [15], avoiding agglomerates that could increase the material porosity, thus boosting electron conduction and dielectric loss [11].…”

Influence of ZnO and TiO2 Particle Sizes in the Mechanical and Dielectric Properties of Vulcanized Rubber

“…The crystalline phase is better observed when the fillers have nanometric size (Figure 6). For example, if we compare the diffraction model after ultrasonic homogenization we obtain several crystalline lattices from titanium dioxide and zinc oxide in the range 2θ (19 o -71 o ). The swelling has been reduced from 3.40% for unmodified NR to 1.45% for the films prepared with the fillers sonicated for 10 min.…”

“…Therefore, it is important to highlight that in order to increase the dielectric properties homogeneous microstructures should be obtained. [19][20] Agglomerates usually increase the porosity of the material, thus increasing electron conduction and dielectric loss. Therefore, they tend to form conductive pathways which in turn increase dielectric loss and leakage current.…”