アイソタクチックポリプロピレン配向試料の１軸伸長における分子鎖の挙動

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タイトル別名
  • Molecular Behavior in Uniaxial Drawing of Preoriented Isotactic Polypropylene Sheet
  • アイソタクチック ポリプロピレン ハイコウ シリョウ ノ 1ジク シンチョウ

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抄録

Superstructural variation of reoriented isotactic polypropylene sheet during uniaxial extension was followed by the wide-angle X-ray diffraction (WAXD) and the small-angle X-ray scattering (SAXS), The shear deformation of the crystallites (A2 process) and the restoration of molecular orientation from the shear-deformed state (A2 process) were distinguished by X-ray goniometries using WAXD and SAXS. The crystallite thickness depends on the testing temperature after the initiation of the A2 Process. The tensile stress along the chain direction aueleratedly increased after the initiation of the A2 process. The behavior of molecular chains in the A2 process can be explained as a result of the refolding of extending tie molecules to form new crystallites after they are pulled out of crystallites by overcoming the intermolecular force to restrain them in the crystallites.

収録刊行物

  • 高分子論文集

    高分子論文集 34 (6), 465-474, 1977

    公益社団法人 高分子学会

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