Key points are not available for this paper at this time.
An X-ray method of crystallinity determination has been developed which takes into account the diffuse scattering due to thermal vibrations and lattice imperfections in the crystalline part of a substance. Application of the method to a series of polypropylene samples shows that this diffuse scattering is predominantly caused by thermal motions.
W. Ruland (Fri,) studied this question.