Crystallization Behavior of Polymer Blends

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  • SAITO Hiromu
    Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology
  • TOYOTA Akinori
    Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology

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Other Title
  • ポリマーブレンドの結晶化挙動
  • ポリマー ブレンド ノ ケッショウカ キョドウ

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Description

Crystallization behaviors of polymer blends are reviewed. The crystallization of polymers is delayed in polymer blends by exclusion of non-crystalline components from the crystal growth front and crystals grow nonlinearly with crystallization time. Various crystalline morphologies are obtained by controlling the degree of exclusion in polymer/polymer, polymer/oligomer and polymer/carbon dioxide systems. On the other hand, the crystallization rate of polypropylene and poly(1-butene) was found to be drastically accelerated by blending the polyolefin with cyclodextrin inclusion complexes. In the blends with a two-phase region below the melting temperature, characteristic crystallization behavior occurs by competitive progress of phase separation and crystallization. Crystallization of polycarbonate was induced by the up-hill diffusion of the liquid-liquid phase separation via spinodal decomposition and connected spherulites were developed, for instance.<br>

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 68 (6), 353-369, 2011

    The Society of Polymer Science, Japan

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