| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
Measurement of Moisture-dependent Ion Diffusion Constants in Wood Cell Wall Layers Using Time-lapse Micro X-ray Fluorescence Microscopy |
| Author(s) |
Joseph Jakes, Samuel Zelinka, Christopher Hunt, Peter Ciesielski, Charles Frihart, Danielle Yelle, Leandro Passarini, Sophie-Charlotte Gleber, David Vine, Stefan Vogt |
| On-Site Speaker (Planned) |
Joseph Jakes |
| Abstract Scope |
The diffusion of chemicals and inorganic ions through wood cell walls is a critical process in nearly all woody biomass applications, including biorefineries, wood-based building materials, green electronics, and even as bioinspiration for new smart materials. Despite the near ubiquitous importance of intra-cell wall diffusion, the poorly understood diffusion mechanisms and rates are hindering progress. In this work, a new experimental methodology utilizing synchrotron-based X-ray fluorescence microscopy (XFM) is developed to provide the needed quantification of diffusion rates through wood cell walls. The results also improve the understanding of diffusion mechanisms. With these new insights, researchers can now utilize polymer science approaches to engineer the molecular architecture of lignocellulosic biomass to optimize properties for specific end uses. Additionally, our newly developed XFM-based approach could be adapted to study diffusion in the micron-scale features of other types of biological materials. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |