Charge transfer in polymers

Seanor, D. A.

doi:10.1007/bfb0051607

Cited by 25 publications

(5 citation statements)

References 81 publications

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“…Electrical conduction in polymers is a complex phenomenon, which may depend on the molecular configuration, defects and impurities in the structure, and the type of electrodes, as well as temperature and moisture. [23][24][25] Developing a model to capture these effects is beyond the scope of this paper. Instead, we propose a model based on following empirical observations.…”

Section: Model Of Leakage Currentmentioning

confidence: 99%

“…This process is known as current leakage, which is well documented in several insulator and semi-conductor systems. 17,[23][24][25][26][27] The occurrence of leakage current is a result of the transport of electrons, ions, or both, [23][24][25] and is often linked to the presence of impurities and imperfections. 23,24 In the simplest case, the leakage current density varies approximately linearly with the applied field for small electric fields (< 10 MV/m), known as the Ohmic conduction.…”

Section: Introductionmentioning

confidence: 99%

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Model of dissipative dielectric elastomers

Foo

Cai

Koh

et al. 2012

Journal of Applied Physics

213

161

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The interplay of the polyelectrolyte-surface electrostatic and non-electrostatic interactions in the polyelectrolytes adsorption onto two charged objects -A self-consistent field study J. Chem. Phys. 137, 104904 (2012) Voltage-induced deformation in dielectric J. Appl. Phys. 112, 033519 (2012) Concentration and mobility of charge carriers in thin polymers at high temperature determined by electrode polarization modeling J. Appl. Phys. 112, 013710 (2012) Crystal phase dependent photoluminescence of 6,13-pentacenequinone J. Appl. Phys. 112, 013512 (2012) Frequency-dependent dielectric response model for polyimide-poly(vinilydenefluoride) multilayered dielectrics Appl.The dynamic performance of dielectric elastomer transducers and their capability of electromechanical energy conversion are affected by dissipative processes, such as viscoelasticity, dielectric relaxation, and current leakage. This paper describes a method to construct a model of dissipative dielectric elastomers on the basis of nonequilibrium thermodynamics. We characterize the state of the dielectric elastomer with kinematic variables through which external loads do work, and internal variables that measure the progress of the dissipative processes. The method is illustrated with examples motivated by existing experiments of polyacrylate very-high-bond dielectric elastomers. This model predicts the dynamic response of the dielectric elastomer and the leakage current behavior. We show that current leakage can be significant under large deformation and for long durations. Furthermore, current leakage can result in significant hysteresis for dielectric elastomers under cyclic voltage.

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Section: Model Of Leakage Currentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Model of dissipative dielectric elastomers

Foo

Cai

Koh

et al. 2012

Journal of Applied Physics

213

161

View full text Add to dashboard Cite

show abstract

“…Some authors [3,4] suggest ionic conduction as the charge transport mechanism, while others [5] suggest electronic charge transfer. Later literature [6][7][8] suggests that charge transport mechanisms may involve electrons, holes or ions, or combinations of all three, with the dominant process being determined by the material involved and the details of the experimental situation.…”

Section: Introductionmentioning

confidence: 99%

Surface conductivity of insulators: one-dimensional initial value problems and the inviscid Burgers equation

Holcombe¹,

Liesegang²,

Smith³

2004

J. Phys.: Condens. Matter

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A generalized derivation of the equations governing surface carrier diffusion in the surface region of an insulator is presented, based on the Mott–Gurney model of ionic diffusion as first proposed in Liesegang et al (1995 J. Appl. Phys. 77 5782; 1996 J. Appl. Phys. 80 6336). The resulting non-linear equations are decoupled for the case of one-dimensional diffusion and we show that the decay of the electric field is described by the inviscid Burgers equation. Imposing initial and boundary conditions reflecting the experimental configuration for a Cartesian system as discussed in Liesegang et al, a general solution for the carrier density in the surface of an insulating sample is derived for the case of one-dimensional charge motion.

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“…However, self-supporting clay-mineral films are more useful than powders for the study of the structure-property relationships of clay minerals and their organic complexes. To obtain reasonable currents from insulators, samples should be thin and of high area, and the applied potential should be large (Seanor, 1965). Hence, clay films are ideally suited for this measurement.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Electrical Properties of Quaternary Ammonium Montmorillonite-Polystyrene Complexes

Kato

1981

Clays and clay miner.

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Abstract--Intercalation compounds of styrene and quaternary ammonium montmorillonite were prepared by immersion of the clay in styrene monomer. The intercalation of stearyltrimethylammonium (CHa(CH~)lTN(CHs)a+)-montmorillonite and styrene showed an expansion of the basal spacing to a constant value of ~32 ,~ after immersion for 10 days. After polymerization, the amount of polystyrene in the interlayer region was determined by thermal gravimetric analysis. Styrene adsorption initially increased with increasing quaternary ammonium cation and then became approximately constant when loading of the quaternary ammonium cation exceeded 100 meq/100 g clay. The volume resistivity of the stearyltrimethylammonium-montmorilionite-polystyrene complex, which was determined with a high resistance meter, was greater than that of both the quaternary ammonium-montmorillonite and the montmorillonite, and increased in proportion to the amount of polymer adsorbed. These data indicate that polystyrene improved the insulating properties of the clay films.

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Charge transfer in polymers

Cited by 25 publications

References 81 publications

Model of dissipative dielectric elastomers

Model of dissipative dielectric elastomers

Surface conductivity of insulators: one-dimensional initial value problems and the inviscid Burgers equation

Preparation and Electrical Properties of Quaternary Ammonium Montmorillonite-Polystyrene Complexes

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