Synchrotron X-ray tomography for 3D chemical diffusion measurement of a flame retardant in polystyrene

In an on-going tomographic project, material properties of industrial polymer blends are being studied. This project uses 3D chemical analysis techniques to look at a polymer additive problem called blooming, related to the theory of aging and diffusion in glassy materials. The 3D images are acquire...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2007-11, Vol.582 (1), p.202-204
Main Authors: Barnett, H.A., Ham, K., Butler, L.G.
Format: Article
Language:English
Subjects:
Diffusion
Multi-energy
Multi-spectral
Polymer blends
Tomography
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Summary:In an on-going tomographic project, material properties of industrial polymer blends are being studied. This project uses 3D chemical analysis techniques to look at a polymer additive problem called blooming, related to the theory of aging and diffusion in glassy materials. The 3D images are acquired with synchrotron X-ray tomography because of its rapidity, good spatial resolution, large field-of-view, and elemental sensitivity. To investigate the chemical process of blooming, new procedures are developed to assess the flame retardant distribution as a function of annealing time in the sample. With the spatial chemical distribution we fit the concentrations to a diffusion equation to each time step in the annealing process. In this preliminary work, we study the dissolutions of a non-blooming flame retardant.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2007.08.108