THE ORIENTATION EVALUATION OF INFRARED DICHROISM IN UNIAXIALLY STRETCHED POLYVINYL ALCOHOL

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  • Hibi Sadao
    Department of Fiber and Polymer Technology, Nagoya Institute of Technology
  • Maeda Matsuo
    Department of Fiber and Polymer Technology, Nagoya Institute of Technology
  • Makino Shoji
    Department of Fiber and Polymer Technology, Nagoya Institute of Technology
  • Nomura Shunji
    Departmetn of Polymer Chemistry, Faculty of Engineering, Kyoto University
  • Kawai Hiromichi
    Departmetn of Polymer Chemistry, Faculty of Engineering, Kyoto University

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Other Title
  • 一軸延伸ポリビニルアルコールの赤外二色性による配向評価
  • 1ジク エンシン ポリビニルアルコール ノ セキガイ 2ショクセイ ニ ヨル ハイコウ ヒョウカ

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Abstract

The evaluation of crystalline and non-crystalline orientation factors of PVA film from the data on x-ray diffraction, infrared dichroism, and birefringence is performed, and the following conclusion are obtained:<br>(1) By using experimental result of the infrared dichroism and x-ray diffraction analyses, infrared transition moment angle of a crystalline absorption band can be determined quantitatively The crystalline orientation factor of a uniaxially stretched PVA can be determined quantitatively from infrared dichroism measurements. The transition moment angles Θj, to the crystalline chain axis for the 1141cm-1 band are 81°25′ and 83°25′ for samples annealed at 160°C and 90°C, respectively.<br>(2) The non-crystalline orientation factor com be determined from infrared dichroism of the uniaxially stretched PVA films dyed with Congo Red, by compensating method using non-dyed films The infrared dichroic orientation factor Fam, (I. R) for the 755cm-1 band is in agreement with the non-crystalline orientation factor Fam, (Bir) calculated by assuming that the additivity of birefringence is valid.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 27 (6), 246-253, 1971

    The Society of Fiber Science and Technology, Japan

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