二軸延伸フィルムの延伸に伴う分子配向挙動第2報 二軸延伸ポリエチレンテレフタラートフィルムの緒晶各回折面の配向挙動
Molecular Orientation Behavior with Drawing of Biaxially Stretched FilmPart II Orientation Behavior of Crystal Each Diffracted Plane of Biaxially Stretched Poly (ethylene terephthalate) Film
丹羽貴裕・図師泰伸・日比貞雄・永田紳一・谷 知
Niwa, Takahiro / Zushi, Yasunobu / Hibi, Sadao / Nagata, Shinichi / Tani, Satoru
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.
Key words: Biaxial stretching / Poly (ethylene terephthalate) / X-ray diffraction / Pole figure / Preferential orientation