Frequency and Temperature Dependence of Dielectric Behaviors for Conductive Acrylic Composites

Abstract

In this study, acrylic-based conductive polymeric composite thin films were prepared by in situ chemical polymerization of pyrrole (Py) in the case of ammonium persulfate (APS) and iron(III) chloride (FeCl 3 ). Composite thin films were produced by the solution casting method. The effect of polypyrrole (PPy) content and the type of oxidant on the morphological and dielectric properties were investigated. Temperature-and frequency-dependent dielectric properties were also studied in a frequency domain starting from 0.01 Hz to 10 MHz and in a temperature domain from 35 to 195°C. The results revealed that the dielectric constant and dielectric loss increased, whereas temperature and the highest dielectric values were obtained in the case of APS. The density of interconnected pores enwrapped with PPy under the surface improved the electrical/dielectric properties of the composite thin films. C 2015 Wiley Periodicals, Inc. Adv Polym Technol 2016, 35, 21523; View this article online at wileyonlinelibrary.com.

A Systematic Study on Morphological, Electrical and Electromagnetic Shielding Performance of Polypyrrole Coated Polyester Fabrics

“…The DC conductivity of FeCl3+p-TSA doped PES-PPy composite fabric is 5800 times higher than FeCl3 doped PES-PPy composite fabric which could be due to the homogeneously distribution of PPy nanoparticles in the presence of p-TSA dopant. The FeCl3+p-TSA initiatordopant system can show enhanced electron mobility and higher polymerization degree of pyrrole than FeCl3 for the %0.4 (v/v) PPy coated PES-PPy composite fabrics [26].…”

Chemically/Electrically-assisted Regeneration of Polyacrylonitrile-based Hydrogel Adsorbed Heavy Metals 

“…The SEM monographs for the PAN-based hydrogel in comparison with the pure PAN are given in (Fig. 4), the pure PAN has uniform particles size between (180-300 nm) [38]. Whereas PAN-based hydrogel surface morphology suggested the absence of uniform particles and more pores instead.…”

Characterization, thermal behavior, and electrical measurements of poly[4‐(2‐bromoisobutyroyl methyl)styrene]

“…[1,2] The dielectric constant and dissipation factor among dielectric properties are crucial quantities required in the design of devices, which are developed and produced for various aims. The organic-based polymers have lower generally dielectric constants due to their lower density and individual bond polarizability.…”

“…However, it is possible to tailor by the modification of the geometric and chemical structure. [1,2] The dielectric constant and dissipation factor among dielectric properties are crucial quantities required in the design of devices, which are developed and produced for various aims. [3] The dielectric property of a material or polymer is estimated by both the charge distribution and statistical thermal motion of its polar groups.…”

“…The organic‐based polymers have lower generally dielectric constants due to their lower density and individual bond polarizability. However, it is possible to tailor by the modification of the geometric and chemical structure . The dielectric constant and dissipation factor among dielectric properties are crucial quantities required in the design of devices, which are developed and produced for various aims .…”