Correlation Between Different Crystal Structures and Physical Properties of PVDF Films Fabricated by Solvent Casting from a Single Solvent

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  • SASAKI Yasutaka
    Graduate school of Engineering, Kanazawa Institute of Technology
  • OSHIRO Hironori
    Graduate school of Engineering, Kanazawa Institute of Technology
  • TAKAHASHI Seiji
    Research Laboratory for Integrated Technological Systems, Kanazawa Institute of Technology
  • KONO Akihiko
    Research Laboratory for Integrated Technological Systems, Kanazawa Institute of Technology
  • NISHIYAMA Takashi
    Research Laboratory for Integrated Technological Systems, Kanazawa Institute of Technology
  • AIZAWA Koji
    Graduate school of Engineering, Kanazawa Institute of Technology
  • HORIBE Hideo
    Graduate school of Engineering, Kanazawa Institute of Technology Research Laboratory for Integrated Technological Systems, Kanazawa Institute of Technology

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Other Title
  • 溶媒キャスト法により単一溶媒から作製したPVDFの結晶構造と物性との相関
  • ヨウバイ キャストホウ ニ ヨリ タンイツ ヨウバイ カラ サクセイ シタ PVDF ノ ケッショウ コウゾウ ト ブッセイ ト ノ ソウカン

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Description

Poly(vinylidene fluoride) (PVDF) has three crystal structures: form I, II, and III. The relationship between the PVDF crystal structure and physical properties had not been investigated. We have previously reported that three crystal structures were made from a single solvent. In this study we evaluated the thermal, optical, and electrical properties of all three PVDF crystal structures which can be made by solvent casting using a single solvent. Light transmittance (wavelength: 800 nm, 33 µm film thickness) was 93% (form II), 95% (form III), and 97% (form I). Melting point was 165°C (form I), 174°C (form II), and 173°C (form III). The relative permittivity was 13 (form I), 6 (form III), and 11 (form III). From these results, we confirmed that the physical properties of PVDF depended on the difference in the crystal structure.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 70 (9), 489-495, 2013

    The Society of Polymer Science, Japan

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