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Volume‐Resolved Nanostructure Survey of a Polymer Part by Means of SAXS Microtomography
Author(s) -
Stribeck Norbert,
Camarillo Armando Almendarez,
Nöchel Ulrich,
Schroer Christian,
Kuhlmann Marion,
Roth Stephan V.,
Gehrke Rainer,
Bayer Rüdiger K.
Publication year - 2006
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200600147
Subject(s) - small angle x ray scattering , materials science , scattering , voxel , nanostructure , optics , physics , nanotechnology , computer science , artificial intelligence
Abstract Summary: Small‐angle X‐ray scattering (SAXS) microto‐ mography (micro‐CT) resolves structure variation in an anisotropic polyethylene (PE) gradient material with fiber symmetry. 4 900 reconstructed SAXS patterns describe the nanostructure as a function of volume element position in the scanned fiber cross‐section. Reconstruction errors were observed. Their first‐order effect was eliminated by transformation of the SAXS into a multidimensional chord distribution function (CDF). Its analysis shows oriented lamellae stacks in a shell layer and extended chains in the central core of the fiber. We document zones of uni‐ and bimodal structure, variation of long periods, stack heights, and lateral domain extension.Original SAXS patterns (pseudocolor and 3D plot) from different voxels obtained by micro‐CT reconstruction from measured SAXS projection patterns of a PE rod.