Abstract
Orientation behavior of reciprocal lattice vectors of crystalites in orthogonal-biaxially stretched PVA film was investigated by means of pole figure analyses of X-ray diffraction. The orthogonal-biaxially stretching was performed under the following three fashions; simultaneous, strip biaxial, and two-step biaxial.
1) For the simultaneous biaxial stretching, it was found that (101) plane tends to orient parallel to the film plane, but it randomly orients around the normal of film plane, and that (10_??_) plane becomes parallel to the normal of film plane.
2) For the strip and two-stpe biaxial stretching, (101) plane tends to orient parallel to the film plane, but the behavior of (10_??_) plane changes with the deformation of orthogonal biaxial stretching.
