Scanning microbeam X-ray scattering of fibers analyzed by one-dimensional tomography

Abstract

The investigation of structure gradients in polymer fibers or pipes by the X-ray microbeam scanning technique is put on its theoretical fundament. The inverse Abel transform desmears measured data in X-ray scattering fiber computer-tomography (XSF-CT). Fast, low noise algorithms from one-dimensional tomography are available. They are applicable to scan data in which the X-ray absorption, the small-angle X-ray scat-tering (SAXS), or the wide-angle X-ray diffraction (WAXD) is measured. The method is demonstrated by application to SAXS scan data from a polymer fiber. The resulting sequence of image-space SAXS patterns is reflecting the nanostructure variation along the fiber radius. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA.