Crystal Growth of Isotactic Poly(butene-1) in the Melt. 1. Kinetic Roughening

  • Yamashita Motoi
    Department of Physics, Graduate School of Science, Kyoto University
  • Miyaji Hideki
    Department of Physics, Graduate School of Science, Kyoto University
  • Hoshino Akitaka
    Department of Physics, Graduate School of Science, Kyoto University
  • Izumi Kunihide
    Department of Physics, Graduate School of Science, Kyoto University

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タイトル別名
  • Crystal Growth of Isotactic Poly(butene-1) in the Melt. I. Kinetic Roughening

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抄録

The morphology, lateral growth rate and long spacings of isotactic poly(butene-1) (it-PB1) have been investigated for crystallization from the melt over a wide range of crystallization temperature from 50 to 111.9 °C. The morphology of it-PB1 crystals is rounded shape at crystallization temperatures lower than 85 °C, while lamellar single crystals possess faceted morphology at higher crystallization temperatures; the kinetic roughening transition occurs around 85 °C. The nucleation and growth mechanism for crystallization does not work below 85 °C, since the growth face is rough. However, the growth rate and the long spacings show the supercooling dependence derived from the nucleation and growth mechanism; the nucleation theory seems still to work even for rough surface growth. Taking account of a pinning model revised recently by Toda, possible mechanisms for the crystal growth of polymers are discussed.

収録刊行物

  • Polymer Journal

    Polymer Journal 36 (3), 226-237, 2004

    The Society of Polymer Science, Japan

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