Dielectric Behavior of Paint/PZT Nanocomposite Films

Batra, Ashok K.; Alomari, Almuatasim; Thomas, Mychal

doi:10.9734/bjast/2015/15499

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…Therefore, the results obtained in this investigation were examined in the framework of other potentially relevant types of conduction mechanism(s) present due to the complex nature of charge transport [21]. Other relevant and possible conduction processes include SCLC [22], Schottky [23], and PF [24] mechanisms. It is worth mentioning that the membranes consist of nanofibers with PLZT of ~ 30 nm size and hence demonstrate slightly higher conductivity as compared with PVDF.…”

Section: Steady-state Electrical Conductionmentioning

confidence: 99%

On the mechanisms of DC conduction in electrospun PLZT/PVDF nanocomposite membranes

et al. 2022

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Designing dielectric nanocomposite films with excellent dielectric properties is of strategic importance for a variety of applications requiring pressure sensing, energy harvesting and storing, and biomedical technology. Hence, the present investigation aims at studying the dielectric properties of lead lanthanum zirconate titanate (PLZT)/poly(vinylidene fluoride) (PVDF) nanocomposite based membranes fabricated using traditional electrospinning techniques. The composites were investigated for structural and electrical conductivity properties at varying temperatures. While the Scanning Electron microscope revealed beaded and unannealed micro/nanofibers, the observations of temperaturedependent electrical conductivity imply that the charge carrier transport phenomena involve more than one conduction mechanism. This is an interesting observation and can be explained in terms of the contents and porosity of the composites. As compared to PVDF, PLZT/PVDF nanocomposite films have somewhat better conductivity. The space charge limited current (SCLC) was the dominant mechanism at high voltages, while the Schottky-Richardson conduction mechanism was dominating at high temperature, according to observed J-V characteristics. The DC activation energy was found to be different, as expected, due to the dynamically heterogeneous nature of PLZT aggregates within the polymer matrix; however, the films exhibit the well-known Arrhenius relationship. This indicates that the dominant conduction mechanism is observed to be electronic and thermally activated.

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Section: Steady-state Electrical Conductionmentioning

confidence: 99%

On the mechanisms of DC conduction in electrospun PLZT/PVDF nanocomposite membranes

et al. 2022

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“…Also, the dielectric constant ε′ of composite films based on modified alkyd resins and modified Zirconium Titanate (PZT) increased with the PZT fraction. It reached a value of 24 at room temperature, 15.65% PZT, and a frequency of 1 kHz [ 24 ]. Recently, the dispersibility of native and surface treated Titanium Dioxide nanoparticles in an AR was studied.…”

Section: Introductionmentioning

confidence: 99%

Addition of microcrystalline cellulose to an alkyd resin/titanium dioxide film: effect on dielectric properties

Zyane

Ablouh

Sabbar

et al. 2020

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In this study, various composite films were prepared by varying the amounts of long-oil Alkyd Resin (AR), Titanium Dioxide (TiO 2) and Microcrystalline Cellulose (MCC). The effects of each component, TiO 2 and MCC, on the properties and microstructure of the dry film were determined by examining images obtained by scanning electron microscopy (SEM) and studying the evolution of dielectric properties, the dielectric constant and the loss factor, against frequency at room temperature. Results showed that the introduction of the TiO 2 /MCC powder with a weight ratio larger than 1 and a volumetric pigment concentration (VPC) less than 50% allowed a better dispersion of the particles and fitted well the Linchtencker logarithmic mixing law and the Maxwell-Garnett theory. Finally, a marked improvement of the dielectric constant with respect to those of pure alkyd resin and AR/TiO 2 composites was observed.

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