The impact of micro- and nanocellulose on paper sheet properties is well known. However, their distribution inside paper sheets is still not completely explored. Here we show that the combination of two independent labeling techniques provides valuable information improving the fundamental understanding of the distribution of cellulosic particles in paper sheets. <i>In-situ</i> nanoparticle labeling of the small cellulosic particles enhances the contrast to the paper sheet matrix and enable the application of SEM/energy dispersive x-ray spectroscopy and x-ray microtomography both resulting in 3D images. Fluorescence imaging using dyes achieves higher resolutions and investigations with the multiphoton microscope suppress out-of-focus light. The combination of these techniques allows the identififcation of these particles inside a cellulose matrix. Advantages and limitations of the approach will be discussed.

Imaging of micro- and nanocellulose to elucidate their role in paper sheets

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.