Seikei-Kakou
Online ISSN : 1883-7417
Print ISSN : 0915-4027
ISSN-L : 0915-4027
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Volume 7, Issue 11
Displaying 1-3 of 3 articles from this issue
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  • TEX-F for Biodegradable Loose Fill Packing Material
    Fumiaki Tsuda, Hiroshi Iwasaki
    1995 Volume 7 Issue 11 Pages 703-708
    Published: November 20, 1995
    Released on J-STAGE: November 18, 2009
    DOIhttps://doi.org/10.4325/seikeikakou.7.703
    JOURNAL FREE ACCESS
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  • Molecular Orientation Behavior with Drawing of Biaxially Stretched Film
    Part I Molecular Orientation with Drawing of Biaxially Stretched Poly (ethylene terephthalate) Film
    Yasunobu ZUSHI, Takahiro NIWA, Sadao HIBI, Shinichi NAGATA, Satoru TAN ...
    1995 Volume 7 Issue 11 Pages 723-728
    Published: November 20, 1995
    Released on J-STAGE: November 18, 2009
    DOIhttps://doi.org/10.4325/seikeikakou.7.723
    JOURNAL FREE ACCESS
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    The molecular orientation for biaxially stretched poly (ethylene terephthalate) (PET) film have been explored by means of optical and microwave methods. The conformational change in amorphous PET chain was investigated by the measurement of infrared spectrum. The gauche conformation in amorphous PET chain gradually changed to the trans conformation about 3.5 area stretch ratio for biaxially stretched film. Molecular orientation ratio (MOR) from microwave measurement was similar to in-plane birefringence by Abbe refractometer for biaxially stretched film. Good correlations between refactive indices by Abbe and microwave measuements are found for biaxially stretched film.
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  • Molecular Orientation Behavior with Drawing of Biaxially Stretched Film
    Part II Orientation Behavior of Crystal Each Diffracted Plane of Biaxially Stretched Poly (ethylene terephthalate) Film
    Takahiro NIWA, Yasunobu ZUSHI, Sadao HIBI, Shinichi NAGATA, Satoru TAN ...
    1995 Volume 7 Issue 11 Pages 729-735
    Published: November 20, 1995
    Released on J-STAGE: November 18, 2009
    DOIhttps://doi.org/10.4325/seikeikakou.7.729
    JOURNAL FREE ACCESS
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    Biaxially stretched poly (ethylene terephthalate) (PET) films have been characterized by wide angle X-ray diffraction. Pole figures were developed for wide angle diffraction peaks. These are used to interpret structural changes in the films associated with various degrees of biaxial stretching and subsequent constrained annealing. We investigated typical pole figures for (100) and (105) planes normal of biaxially stretched and annealed films. In the triclinic unit cell of PET crystal the phenyl ring planes are roughly parallel to (100) planes and (105) planes are roughly perpendicular to the chain axis.
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