Micro-waxs study of structural heterogeneity in single pan-precursor and subsequent carbon fiber
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Date
2019-05-20
Journal Title
Journal ISSN
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Publisher
Society for the Advancement of Material and Process Engineering – North America
Abstract
The crystallographic orientation distribution and micro-voids in polyacrylonitrile (PAN) based carbon fiber play a key role in controlling the fiber’s strength and modulus. The evolution of microstructure from polyacrylonitrile (PAN) precursor fibers throughout oxidation and subsequent carbon fiber, processed using a 100 ton carbon fiber pilot line (Carbon Nexus, Deakin University), was studied by synchrotron wide angle X-ray scattering (WAXS). A dedicated fiber testing capability has been developed on the X-ray Fluorescence Microscopy beamline at the Australian synchrotron facility, where spatially resolving measurements (Micro-WAXS patterns) were recorded as each single fiber was translated across the focused incident X-ray probe in 1 micron steps. Probing along the lateral fiber direction, (100) and (002) WAXS patterns for the PAN and subsequent carbon fibers respectively revealed a non-uniform distribution of crystallographic properties - quantified in terms of the lattice d-spacing, crystallite size and crystallographic orientation, indicating a skin-core-structure. © The Authors.
Description
Keywords
Crystallography, Nitriles, Carbon fibers, Microstructure, Oxidation, X-ray fluorescence analyzers, Neutrons
Citation
Creighton, C., Lynch, P., Nunna, S., Fox, B., de Jong, M., & Mudie, S. (2019). Micro-waxs study of structural heterogeneity in single pan-precursor and subsequent carbon fiber. Paper presented to the SAMPE 2019 Conference and Exhibition, May 20-23, 2019, Charlotte, North Carolina. In SAMPE Conference & Exhibition : conference, May 20-23, 2019, exhibition, May 21-22, 2019, Charlotte Convention Center, Charlotte, North Carolina. doi:10.33599/nasampe/s.19.1544