Interfacial polarization and layer thickness effect on electrical insulation in multilayered polysulfone/poly(vinylidene fluoride) films

Tseng, Jung-Kai; Tang, Saide; Zhou, Zheng; Mackey, Matthew; Carr, Joel M.; Mu, R.; Flandin, Lionel; Schuele, D. E.; Baer, E.; Zhu, Lei

doi:10.1016/j.polymer.2013.11.042

Cited by 119 publications

(103 citation statements)

References 27 publications

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“…4b, an increased dielectric loss of the materials with DEHP was observed at lower frequency range. The dramatically enhanced dielectric permittivity and the increased dielectric losses at low frequency were in accordance with the interfacial polarization according to the well-known Maxwell-Wagner-Sillars (MWS) polarization model2122. The introduced plasticizer tended to improve the molecular mobility and thus enhance the probability of the charges becoming trapped at the heterogeneous boundaries within the polymer matrix.…”

supporting

confidence: 63%

“…It has been shown that the saturation electric field of the P(VDF-TrFE-CFE) +15wt% of DEHP decreased exponentially to the amount of doping agent from E sat = 50 V/μm for the neat terpolymer to E sat = 6.7 V/μm . As the DEHP content was raised, the molecular mobility within the polymer increased, leading to a higher mobility of the charge carriers2224. Above the saturation electric field of the interfacial polarization phenomena, trapped charges impeded the movement of the carriers thus causing a lower dielectric permittivity of the composite and as a result, a saturation of the electric field-induced electrostrictive strain.…”

mentioning

confidence: 99%

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All-organic electrostrictive polymer composites with low driving electrical voltages for micro-fluidic pump applications

Capsal

Galineau

et al. 2015

Sci Rep

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This paper focuses on the improvement of a relaxor ferroelectric terpolymer, i.e., poly (vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) [P(VDF-TrFE-CFE)], filled with a bis(2-ethylhexyl) phthalate (DEHP). The developed material gave rise to a significantly increased longitudinal electrostrictive strain, as well as an increased mechanical energy density under a relatively low electric field. These features were attributed to the considerably enhanced dielectric permittivity and a decreased Young modulus as a result of the introduction of only small DEHP plasticizer molecules. In addition, the plasticizer-filled terpolymer only exhibited a slight decrease of the dielectric breakdown strength, which was a great advantage with respect to the traditional polymer-based electrostrictive composites. More importantly, the approach proposed herein is promising for the future development and scale-up of new high-performance electrostrictive dielectrics under low applied electrical fields through modification simply by blending with a low-cost plasticizer. An experimental demonstration based on a flexible micro-fluidic application is described at the end of this paper, confirming the attractive characteristics of the proposed materials as well as the feasibility of integrating them as micro-actuators in small-scale devices.

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supporting

confidence: 63%

mentioning

confidence: 99%

All-organic electrostrictive polymer composites with low driving electrical voltages for micro-fluidic pump applications

Capsal

Galineau

et al. 2015

Sci Rep

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“…50 From Figure 3B, the conductivity of the pre-poled sample was slightly lower than that of the fresh sample. Therefore, we consider that the polarized β dipoles would slightly decrease the internal/local field and prevent the electronic leakage through the sample.…”

Section: Different Factors Affecting Electronic Conduction In the Bopvdfmentioning

confidence: 90%

Semicrystalline Structure–Dielectric Property Relationship and Electrical Conduction in a Biaxially Oriented Poly(vinylidene fluoride) Film under High Electric Fields and High Temperatures

Yang

Allahyarov

et al. 2015

ACS Appl. Mater. Interfaces

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119

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Poly(vinylidene fluoride) (PVDF)-based homopolymers and copolymers are attractive for a broad range of electroactive applications because of their high dielectric constants. Especially, biaxially oriented PVDF (BOPVDF) films exhibit a DC breakdown strength as high as that for biaxially oriented polypropylene films. In this work, we revealed the molecular origin of the high dielectric constant via study of a commercial BOPVDF film. By determination of the dielectric constant for the amorphous phase in BOPVDF, a high value of ca. 21-22 at 25 °C was obtained, and a three-phase (i.e., lamellar crystal/oriented interphase/amorphous region) semicrystalline model was proposed to explain this result. Meanwhile, electronic conduction mechanisms in BOPVDF under high electric fields and elevated temperatures were investigated by thermally stimulated depolarization current (TSDC) spectroscopy and leakage current studies. Space charge injection from metal electrodes was identified as a major factor for electronic conduction when BOPVDF was poled above 75 °C and 20 MV/m. In addition, when silver or aluminum were used as electrodes, new ions were generated from electrochemical reactions under high fields. Due to the electrochemical reactions between PVDF and the metal electrode, a question is raised for practical electrical applications using PVDF and its copolymers under high-field and high-temperature conditions. A potential method to prevent electrochemical degradation of PVDF is proposed in this study.

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“…The attractiveness of this technology has even led Dow to license it to the company EDI for commercial production and sale . It has been effectively demonstrated over the years that this technology has the capability to provide enhanced material properties in many polymer systems with wide ranges of application …”

Section: Introductionmentioning

confidence: 99%

Microlayer and nanolayer tubing and piping via layer multiplication coextrusion. I. Validation

Schneider

Danda

Ling

et al. 2019

J of Applied Polymer Sci

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Layered annular structures produced with layer multiplication coextrusion, utilizing both a standard in‐line “spider” die, and a custom annular die, are compared in structures up to 129 layers. One multilayered system, of a Dow LDPE 5004I was utilized in generating experimental results to validate the custom die design performance. It was found that the custom design demonstrates successful extrusion of high layer number annular structures with substantial benefits over the standard spider die. Moreover, a design method incorporating angular rotation was implemented within the custom die to eliminate weld lines and attain concentric layer structures to further enhance commercial viability and mechanical integrity. Results indicate angular rotation may be utilized to generate idealized annular products with concentric layer structures. Additionally, exploration of flow through the annular die land was conducted with ANSYS Polyflow in under several conditions of angular rotation. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48683.

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Interfacial polarization and layer thickness effect on electrical insulation in multilayered polysulfone/poly(vinylidene fluoride) films

Cited by 119 publications

References 27 publications

All-organic electrostrictive polymer composites with low driving electrical voltages for micro-fluidic pump applications

All-organic electrostrictive polymer composites with low driving electrical voltages for micro-fluidic pump applications

Semicrystalline Structure–Dielectric Property Relationship and Electrical Conduction in a Biaxially Oriented Poly(vinylidene fluoride) Film under High Electric Fields and High Temperatures

Microlayer and nanolayer tubing and piping via layer multiplication coextrusion. I. Validation

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