準結晶性高分子の力学主分散における緩和機構について

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タイトル別名
  • On the Relaxation Mechanism of Semi-Crystalline Polymers in the Glass-Leather Transition
  • ジュンケッショウセイ コウブンシ ノ リキガクシュ ブンサン ニ オケル カンワ キコウ ニ ツイテ

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説明

The relaxation mechanism of semi-crystalline polymers in the glass-leather transition i.e., the second order transition has not yet so far been understood so well as that of amorphous polymers in the glass-rubber transition is.<br>In this paper, the authors have tried to extend the theoretical approaches usually made in explaining the relaxation mechanism of amorphous polymers to the study of that of semi-crystalline polymers, in other words, the existence of crystalline phase has been taken as the potential effects upon the amorphous chain and as a factor reforming the term of entropy elasticity.<br>So far as the theoretical consideration is concerned, the authors have used Bueche Model and solved the problem in the light of the theory that accounts for the vibration of a string.<br>The relaxation spectra of polyethylene terephthalates having several degrees of crystallinity have been decided from the measurement of complex dynamic tensile modulus on the hypothesis of time-temperature superposition within the glass-leather transition region, and compared with the theoretical results proposed.

収録刊行物

  • 材料

    材料 15 (152), 327-330, 1966

    公益社団法人 日本材料学会

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