X-ray Tomographic Reconstruction for Understanding Lignin-Induced Changes in the Microstructure and Properties of Polyurethane Insulation Foam
Article
Article Title | X-ray Tomographic Reconstruction for Understanding Lignin-Induced Changes in the Microstructure and Properties of Polyurethane Insulation Foam |
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ERA Journal ID | 211585 |
Article Category | Article |
Authors | Haridevan, Hima, Barkauskas, Deborah, Sokolowski, Kamil A., Evans, David A.C., Martin, Darren J. and Annamalai, Pratheep K. |
Journal Title | ACS Applied Polymer Materials |
Journal Citation | 5 (9), pp. 6772-6780 |
Number of Pages | 8 |
Year | 2023 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 2637-6105 |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsapm.3c00380 |
Web Address (URL) | https://pubs.acs.org/doi/10.1021/acsapm.3c00380 |
Abstract | Lignin, the most abundant aromatic biopolymer, is explored as a renewable polyol substituent and functional additive in rigid polyurethane foam (RPUF) for structural and insulation applications. The understanding of the complex microstructural changes in the RPUF caused by lignin micro-nanoparticles has been limited by traditional two-dimensional cross-sectional imaging methods (typically limited to the average cell diameters). This study reports the microstructural changes induced by the dispersion of kraft lignin (0–2% w/w) in RPUF as monitored using X-ray computed microtomographic (X-ray μCT) analysis. The reconstruction and quantification analysis provide greater insight into the changes induced by lignin on the microstructure of the RPUF, allowing rationalization of the microstructure with physical properties. In comparison to scanning electron microscopy, the magnitude of differences observed in spatial parameters (cell volume, cell surface area, cell ellipticity, and distribution) and skeletal parameters (thickness, length, and the distribution of cell walls and struts) is significant and the presented methodology can be applied to the in-depth analysis of other cellular plastics. |
Keywords | X-raytomography; 3D reconstruction; microstructure; polyurethanefoam; lignin |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
400499. Chemical engineering not elsewhere classified | |
340302. Macromolecular materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Translational Research Institute, Australia | |
Centre for Future Materials (Research) | |
School of Agriculture and Environmental Science | |
Centre for Future Materials |
https://research.usq.edu.au/item/z1675/x-ray-tomographic-reconstruction-for-understanding-lignin-induced-changes-in-the-microstructure-and-properties-of-polyurethane-insulation-foam
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