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The internal structure of single carbon fibers determined by simultaneous small‐ and wide‐angle scattering
Author(s) -
Paris O.,
Loidl D.,
Peterlik H.,
Müller M.,
Lichtenegger H.,
Fratzl P.
Publication year - 2000
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889899013436
Subject(s) - scattering , mesophase , microbeam , materials science , optics , synchrotron radiation , diffraction , fiber , small angle scattering , cross section (physics) , small angle x ray scattering , synchrotron , beam (structure) , solid angle , composite material , detector , physics , liquid crystal , quantum mechanics
Simultaneous small‐angle scattering and wide‐angle diffraction using a synchrotron radiation microbeam was applied for the first time to investigate single carbon fibers in a position‐resolved way. Taking into account the exact X‐ray beam profile and examining the fibers in two scattering geometries allowed a discrimination between different models for the internal arrangement of carbon layers and pores. For a fiber based on polyacrylnitrile the carbon layers were randomly oriented within the fiber cross section, whereas in a mesophase‐pitch based fiber the layers were arranged in a radial structure.