抄録
When the drawn nylon 6 films are redraw oblique or perpendicular to the direction of original drawing in the boiling water, many fine parallel bands appear at first and these bands gradually change their direction parallel to that of redrawing as redrawing proceeds. Variation of orientation of crystallites in the deformation band during redrawing is different from that of the region between them. These characteristics of deformation of formation of nylon 6 films have been examined with electron-microscope and x-ray diffraction method.
The kink angle between a deformation band and the direction of polymer chain that is, the direction of first drawing is nearly constant, about 30_??_40 degrees, independently of the direction of redrawing. Two sets of deformation bands intersecting each other are generated when a drawn film is redrawn perpendicular to the direction of first drawing in the hot water above 40°C. Some black granular particular particles are observed on the electon micrograph of collodion carbon replica of redrawn nylon 6 films. These particles are nylon 6 itself torn from the surface of the film and indging from the micrograph it is clear that the tearing off the nylyn 6 from the surface is particularly easy to occur at the places where a marked distortion is caused by deformation. So we may guess the initial state of deformation from the observation of these granular pseudo-structures.
