Polymer Blends: Principles and Applications: Part 1. Polymer-Polymer Miscibility and Applications of Miscible Blends

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  • INOUE Takashi
    Department of Polymer Science and Engineering, Yamagata University

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Other Title
  • ポリマーブレンドの基礎と応用　　１．相溶性と応用
  • トクロン コウザ ポリマー ブレンド ノ キソ ト オウヨウ 1 ソウヨウセイ ト オウヨウ
  • Part 1. Polymer-Polymer Miscibility and Applications of Miscible Blends
  • 1. 相溶性と応用

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Abstract

Thermodynamic discussion on the miscibility between dissimilar polymers leads to: (i) the contribution of combinatorial entropy of mixing to the miscibility is negligibly small and (ii) the miscibility is mostly caused by the hydrogen bonding-type intermolecular specific interactions and the repulsive intramolecular interactions in random copolymers. By analyzing the fee energy curve, the free energy of mixing as a function of composition, phase diagrams are described in terms of the binodal curve and the spinodal curve. Criterions of polymer-polymer miscibility are deduced in the framework of such thermodynamic discussion.<br>The polymer-polymer miscibility is applied: (i) to improve melt-processability (PPE/PS), (ii) to improve ozone resistance (NBR/PVC), (iii) to reduce optical anisotropy (to provide zero-birefringence plastics), (iv) to improve heat resistance (PEEK/PET), and (v) to make materials flexible (PVC/EVA).

Journal

  • NIPPON GOMU KYOKAISHI

    NIPPON GOMU KYOKAISHI 78 (3), 122-127, 2005

    THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN

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