Microtomography of cellulosic structures

Stephen M. Shaler*, Huaijun Wang, Eric Landis, Denis T. Keane, Laurence Mott, Lloyd Holzman

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    9 Scopus citations

    Abstract

    The performance of wood composite materials are manipulated through changes in composition and process variables. Microstructural features such as fiber orientation and void structure are known to be spatially variable. X-ray microtomography techniques were used to measure three-dimensional microstructural features in solid wood, paper, and wood based composites at resolutions of 1.2 μm to 6.75 μm per voxel side. The microtomography was conducted at the X2B beamline built and run by Exxon Research and Engineering at the Department of Energy managed National Synchrotron Light Source (NSLS). Beam energy levels ranged from 8.5 keV to 19 keV, with lower energy levels giving improved signal/noise ratios. Measurement of a single specimen required 2 to 6 hours, with increased times necessary for higher resolutions. Reconstructed three-dimensional data fields of x-ray absorption were used to measure internal features such as fiber curl, inter-fiber void volumes (related to density/grammage variation), and resin impregnation depths in three dimensions with no sectioning artifacts. Technique limitations include small specimen size and the complexity of data analysis and interpretation using existing image analysis based techniques.

    Original languageEnglish (US)
    Title of host publicationProceedings of the Process and Product Quality Conference and Trade Fair
    PublisherTAPPI Press
    Pages89-96
    Number of pages8
    StatePublished - Dec 1 1998
    EventProceedings of the 1998 Process and Product Quality Conference and Trade Fair - Milwaukee, WI, USA
    Duration: Oct 18 1998Oct 23 1998

    Other

    OtherProceedings of the 1998 Process and Product Quality Conference and Trade Fair
    CityMilwaukee, WI, USA
    Period10/18/9810/23/98

    ASJC Scopus subject areas

    • Engineering(all)

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