A new method of evaluation for the meridional amorphous X-ray scattering of nylon-6 fibres is proposed. The facts (1) that the observed (040) profile is broader than those from other (0k0)s and (2) that the value of the crystallite orientation function evaluated from the (040) peak is smaller than those from other (0k0)s are considered to be due to the amorphous scattering overlapping on the crystal (040) diffraction. Under these circumstances, the profile of the meridional amorphous scattering overlapping on the crystal (040) profile was evaluated by a new method. This method is based on the condition that the observed (020), (060), (0140) profiles are hardly affected by the amorphous scattering because such scattering has no structure in the regions of their diffraction angles. The results show that the change of observed (040) profile with extension of fibres is not only due to the increase of crystallite size, as suggested by Kaji (Makromol. Chem. 1974, 175, 311 )i, but also to the concentration of the amorphous scattering caused by orientation.
Посилання на статтю:
WAXD meridional amorphous scattering of =-form nylon-6 fibres / Po-Da Hong* and Keizo Miyasaka // Polymer. – 1992. – Vol 33. – P. 3828-3832.