A polymer blend approach to tailor the ferroelectric responses in P(VDF–TrFE) based copolymers

Chen, Xiang‐Zhong; Li, Xinyu; Qian, Xiao Shi; Wu, Shan; Lu, Sheng Guo; Gu, Hairong; Lin, Minren; Shen, Qun; Zhang, Q. M.

doi:10.1016/j.polymer.2013.02.041

Cited by 70 publications

(56 citation statements)

References 42 publications

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“…These results indicate that the polymer can sustain an electric field greater than 125 MV/m (which was the voltage limit of our polarization measurement set‐up). The observed P r and maximum polarization ( P m ) values agree with those reported by Chen et al . For the P(VDF‐TrFE‐CFE) terpolymer, a very slim P–E loop with very low P r and E c values was observed; this is typical for a ferroelectric relaxor.…”

Section: Resultssupporting

confidence: 89%

“…The blend also provides a direct way to understand the relationship between the polarization responses in the blends. When the defect content reaches 7–9%, the normal ferroelectric polymers will be converted to ferroelectric relaxors ; randomly distributed nanopolar regions will be embedded in a nonpolar matrix. These results demonstrate the promise of using a composite approach for tailoring the ferroelectric properties of PVDF‐based ferroelectric polymers.…”

Section: Introductionmentioning

confidence: 99%

“…In a recent report, Chen et al investigated the electrocaloric effect of the P(VDF‐TrFE‐CFE) terpolymer (62.5/29/8.5 mol%) with a blended P(VDF‐TrFE) (55/45 mol%) copolymer. They observed an enhancement in the ferroelectric properties with the P(VDF‐TrFE) copolymer.…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of dielectric and energy density properties in the PVDF‐based copolymer/terpolymer blends

Ullah

Rahman

Ahn

et al. 2015

Polymer Engineering & Sci

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We investigated the high dielectric constant and energy storage density for the blends of P(VDF‐TrFE) copolymer and P(VDF‐TrFE‐CFE) terpolymer. The degradation of coercive field (Ec) and remnant polarization (Pr) of the copolymer under an electric field of 125 MV/m was observed and the copolymer changed into a typical relaxor ferroelectric with doping of terpolymer. The dielectric constant of P(VDF‐TrFE) was found to be ∼11, but was enhanced to ∼55 by blending with P(VDF‐TrFE‐CFE) at 60 wt%. Consequently, a higher energy density of about 4.2 J/cm3 was obtained in these blends in contrast to about 3.6 J/cm3 in the terpolymer at the very low applied electric field of 125 MV/m. These results demonstrate the promise of blend approaches for tailoring and enhancing the dielectric properties of ferroelectric polymers. POLYM. ENG. SCI., 55:1396–1402, 2015. © 2015 Society of Plastics Engineers

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Enhancement of dielectric and energy density properties in the PVDF‐based copolymer/terpolymer blends

Ullah

Rahman

Ahn

et al. 2015

Polymer Engineering & Sci

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“…The b polar phase has a well ordered state by adopting all-trans (TTTT) conformation which forms dipoles that are perpendicular to the chain direction. This conformation takes its origin from the specific position of the fluorine atoms on one side of the polymer chain [3]. Another polar phase (d-phase) with a very good ferroelectric properties exists but it is very difficult to obtain [4].…”

Section: Introductionmentioning

confidence: 99%

Impact of crystallization on ferro-, piezo- and pyro-electric characteristics in thin film P(VDF–TrFE)

Aliane

Benwadih

Bouthinon

et al. 2015

Organic Electronics

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“…Previous works on the blends of homopolymer (PVDF) and copolymers [P(VDF‐CTFE) and P(VDF‐TrFE)] have shown that extremely high E b (around 850 MV/m) and relatively high energy density (around 30 J/cm 3 ) can be achieved . There are also many reports regarding the blends of copolymers and terpolymers [P(VDF‐TrFE‐CFE)], which exhibit that a small amount of copolymers in the blends can achieve larger polarization and higher electric breakdown strength due to the interface contribution . However, as far as we know, there are no reports about the blends of PVDF and P(VDF‐TrFE‐CFE) before.…”

Section: Introductionmentioning

confidence: 99%

Tailored ferroelectric responses and enhanced energy density in PVDF‐based homopolymer/terpolymer blends

Gao

et al. 2014

J of Applied Polymer Sci

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Blend of polymers is an effective way to tailor the ferroelectric responses and improve the energy storage properties of polymers. In this work, the microstructure and dielectric responses of the blends of poly(vinylidene fluoride) (PVDF) and poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) [P(VDF-TrFE-CFE)] have been studied. It is found that the addition of PVDF disturbs the crystallization process of P(VDF-TrFE-CFE), leading to lower crystallinity and smaller crystalline size. The aforementioned microstructure changes result in tailored ferroelectric responses. Dielectric responses show that the blend with 10 wt % PVDF achieves larger polarization response under high electric field (above 300 MV/m) due to the interfacial polarization. Because of the tailoring effect and the interfacial polarization, the blend with 10 wt % PVDF exhibits higher energy density and efficiency. Moreover, the breakdown strength (E b ) is also improved by adding a small amount of PVDF into the terpolymer. V C 2014 Wiley Periodicals, Inc. J.Appl. Polym. Sci. 2014, 131, 40994.

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A polymer blend approach to tailor the ferroelectric responses in P(VDF–TrFE) based copolymers

Cited by 70 publications

References 42 publications

Enhancement of dielectric and energy density properties in the PVDF‐based copolymer/terpolymer blends

Enhancement of dielectric and energy density properties in the PVDF‐based copolymer/terpolymer blends

Impact of crystallization on ferro-, piezo- and pyro-electric characteristics in thin film P(VDF–TrFE)

Tailored ferroelectric responses and enhanced energy density in PVDF‐based homopolymer/terpolymer blends

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