Abstract
The orientation distribution functions of the (200) and (002) crystal planes of nylon 6 are affected by the degree of crystallinity. As for one specimen with crystallinity 47%, these functions of the (200) and (002) crystal planes have maxima at polar angles θj=0° and θj=90°, respectively. By contrast, as for the other specimen with crystallinity 28%, both functions have a maximum at polar angle θj=90°. These two orientation modes were analyzed using a deformation mode of nylon 6 spherulites. As for the results, this cause was due to the difference of the orientation mode of crystal b-axis, that is, (a) the b-axis orientation associated with the rotation of crystallites around its own c*-axis designating the axis perpendicular to the a- and c-axes and (b) the b-axis orientation associated with random rotation of the crystallites around their own b-axis. The type (a) orientation predominates in the case of a crystallinity 47%, while the type (b) orientation does in the case of crystallinity 28%. A light scattering apparatus was made so that the scanning bench (arm) supporting the photomultiplier could be moved horizontally at a desired fixed angle between the bench and the horizontal direction. This apparatus provided detailed information about the morphology and the deformation mechanism of nylon 6 spherulites. The light scattering pattern from nylon 6 spherulites was accounted for by one from the spherulites with a disorder of the optical axis orientation in the angular distribution.
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Matsuo, M., Seino, Y., Watanabe, T. et al. Deformation Mechanism of Nylon 6 Spherulites under Uniaxial Stretching. Polym J 13, 755–767 (1981). https://doi.org/10.1295/polymj.13.755
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DOI: https://doi.org/10.1295/polymj.13.755