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 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. © 2007 Elsevier B.V. All rights reserved.
Publication Source (Journal or Book title)
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Barnett, H., Ham, K., & Butler, L. (2007). Synchrotron X-ray tomography for 3D chemical diffusion measurement of a flame retardant in polystyrene. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 582 (1), 202-204. https://doi.org/10.1016/j.nima.2007.08.108