Crystal Structure Control of Poly(vinylidene fluoride) (PVDF) in the Blend Films of PVDF and Poly(methyl methacrylate) (PMMA) Prepared by Solvent Casting

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  • PVDF/PMMAブレンドの溶媒キャスト法におけるPVDFの結晶構造制御
  • PVDF/PMMA ブレンド ノ ヨウバイ キャストホウ ニ オケル PVDF ノ ケッショウ コウゾウ セイギョ

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Description

This paper discusses the fabrication method of Poly(vinylidene fluoride) (I) crystal having excellent dielectric properties. We tried to control the crystal structure of PVDF in the blend films of PVDF and Poly(methyl methacrylate) (PMMA) prepared by solvent casting. PVDF/PMMA = 60/40 wt.% blend was dissolved in DMF solvent at 120°C. After casting, the PVDF/PMMA blend films were baked at 150°C (B). Each film was quenched (Q) from melting state and then was annealed at 120°C (QA). As a result, we demonstrated that PVDF (I) crystal grows preferentially under the existence of PMMA. That the crystallization speed of the quenched and annealed PVDF/PMMA blend films (QA) with the blend ratio of PVDF/PMMA = 60/40 wt.% is comparatively slow and forms the PVDF (I) crystal.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 69 (4), 135-141, 2012

    The Society of Polymer Science, Japan

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