Curie Transition in Poled and Unpoled Copolymer of Vinylidene Fluoride and Tetrafluoroethylene

Murata, Yukinobu

doi:10.1295/polymj.19.337

Cited by 16 publications

(2 citation statements)

References 23 publications

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“…An endothermic effect of this process was 1.2 ± 0.3 J/g. The second and more intensive peak corresponds to the melting of the VDF-TeFE copolymer [58], [59]. In this case the endothermic effect was 19.4 ± 0.9 J/g.…”

Section: Resultsmentioning

confidence: 85%

The investigation of the production method influence on the structure and properties of the ferroelectric nonwoven materials based on vinylidene fluoride – tetrafluoroethylene copolymer

Bolbasov

Stankevich

Sudarev

et al. 2016

Materials Chemistry and Physics

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Section: Resultsmentioning

confidence: 85%

The investigation of the production method influence on the structure and properties of the ferroelectric nonwoven materials based on vinylidene fluoride – tetrafluoroethylene copolymer

Bolbasov

Stankevich

Sudarev

et al. 2016

Materials Chemistry and Physics

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“…The relation was derived from a calibration curve plotted using reference films with known copolymerized PPVE content determined by solid-state 19 F NMR spectroscopy. 36,37 = PPVE wt % 0.95 Absorbance at 994 cm Absorbance at 2350 cm…”

Section: Modification Of Bnnbs the Surface Modification Ofmentioning

confidence: 99%

Polytetrafluoroethylene Nanocomposites with Engineered Boron Nitride Nanobarbs for Thermally Conductive and Electrically Insulating Microelectronics and Microwave Devices

Abiodun

Krishnamoorti

Bhowmick

2023

ACS Appl. Nano Mater.

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The demands for effective thermally conductive dielectric composite materials continue to increase due to high speed and low-loss signal propagation required in microwave frequency applications. Composites of polytetrafluoroethylene (PTFE) and boron nitride are promising for these applications. Here, for the first time, recent generation surface-engineered boron nitride nanobarbs (BNNB) material was evaluated at a low filler content in PTFE to achieve the desirable high thermal conductivity and low dielectric loss requirements which are typically difficult without a strong filler–matrix interaction and high filler loading. Composites of modified BNNB and modified PTFE were also fabricated and evaluated. These composites exhibited higher thermal conductivity (1.2–1.3 W/mK) with a lower concentration of boron nitride nanoparticles than those reported in the literature. The data were analyzed by theoretical models and interfacial thermal resistance was the lowest for the composite made from the modified PTFE and modified BNNB. Additionally, the composites displayed excellent dielectric properties including a dielectric constant ≈2.3 and loss tangent of less than 0.005 at frequencies of 1–3 GHz. These results indicate that such thermally conductive and low-loss dielectric composites have significant potential as materials for thermal management and dielectric components in microelectronics, 5G, and microwave devices.

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Melting and curie transition behavior of blends of vinylidenefluoride‐tetrafluoroethylene copolymer and polymethylmethacrylate

Cho

1991

Polymer International

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Thermal properties were investigated using differential scanning calorimetry of blends of vinylidenefluoride‐tetrafluoroethylene (VDF‐TFE) copolymer and polymethylmethacrylate. Curie transition behavior was strongly dependent on the crystallization temperature. A Curie temperature was shown in pure VDF‐TFE copolymer and in the blend with 91 wt % VDF‐TFE copolymer, which were crystallized above the Curie temperature. The samples crystallized above the Curie temperature showed higher melting temperatures than those crystallized below the Curie temperature, resulting in an upturn of slope at high temperatures in the Hoffman‐Weeks plot. The polymer‐polymer interaction parameter was calculated to be −0·165 at 130°C from the equilibrium melting temperatures, indicating miscibility of the two components.

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Curie Transition in Poled and Unpoled Copolymer of Vinylidene Fluoride and Tetrafluoroethylene

Cited by 16 publications

References 23 publications

The investigation of the production method influence on the structure and properties of the ferroelectric nonwoven materials based on vinylidene fluoride – tetrafluoroethylene copolymer

The investigation of the production method influence on the structure and properties of the ferroelectric nonwoven materials based on vinylidene fluoride – tetrafluoroethylene copolymer

Polytetrafluoroethylene Nanocomposites with Engineered Boron Nitride Nanobarbs for Thermally Conductive and Electrically Insulating Microelectronics and Microwave Devices

Melting and curie transition behavior of blends of vinylidenefluoride‐tetrafluoroethylene copolymer and polymethylmethacrylate

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