Small-angle scattering of partially oriented polymers: model calculations

Three-dimensional small-angle intensity plots are calculated and discussed for a structure consisting of a linear paracrystalline lattice built up by finite lamellar or cylindrical crystallites, tilted with respect to the lattice direction. The lattice directions are distributed with respect to the fiber axis. The effects of different parameters (orientation, tilt angle, crystallite size, etc.) on the diffraction pattern are studied.