Chemistry and Spectroscopy of Renewable Materials, Part 2: Investigation of Suitably Esterified Wood Regarding Penetration and Distribution of the Chemically Modifying Reagent by Means of High-Resolution 3D Computed Tomography. Söftje, M., Koddenberg, T., Militz, H., Drafz, M. H. H., Namyslo, J. C., & Kaufmann, D. E. ACS Sustainable Chemistry & Engineering, 8(19):7353–7358, May, 2020. Publisher: American Chemical Society![Chemistry and Spectroscopy of Renewable Materials, Part 2: Investigation of Suitably Esterified Wood Regarding Penetration and Distribution of the Chemically Modifying Reagent by Means of High-Resolution 3D Computed Tomography [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex For both economic reasons and increased environmental awareness, the covalent modification of wood is becoming increasingly important. For that purpose, the application of benzotriazolyl-activated carboxylic acids provides an extremely effective and environmentally friendly method for this type of durable wood modification. High-resolution microcomputed tomography images were taken of pine wood blocks esterified with an activated p-bromobenzoic acid in order to get a deeper insight into the penetration behavior of the reagents into the wood structure. The tomographic investigations allowed the analysis of the bound reagent at two different tomographic resolutions. At low resolution (14 μm voxel size), highly modified regions were observed near the sample surface at the macroscopic level, while the modification had decreased in intensity inward. At high resolution (1 μm voxel size), detailed visualizations at the microscopic level revealed that the modifying reagents penetrate the earlywood completely (near the sample surface), while the latewood revealed regions of higher and lower intensity of modification of the outer cell walls. This observation provides information on the distribution pattern of the modifying reagent in latewood. In detail, the tomographic images highlighted that wood rays and resin canals are pathway traits for the modifying reagents to locally penetrate deeper into the wood tissue, in particular from earlywood into latewood. We demonstrated that the use of various resolutions contributes to the three-dimensional examination of modified wood from the macroscopic level toward the microscopic level. Thereby, we revealed boundaries of the use of XμCT (e.g., voxel contrast) that researchers should be aware of.
@article{softje_chemistry_2020,
title = {Chemistry and {Spectroscopy} of {Renewable} {Materials}, {Part} 2: {Investigation} of {Suitably} {Esterified} {Wood} {Regarding} {Penetration} and {Distribution} of the {Chemically} {Modifying} {Reagent} by {Means} of {High}-{Resolution} {3D} {Computed} {Tomography}},
volume = {8},
shorttitle = {Chemistry and {Spectroscopy} of {Renewable} {Materials}, {Part} 2},
url = {https://doi.org/10.1021/acssuschemeng.0c01574},
doi = {10.1021/acssuschemeng.0c01574},
abstract = {For both economic reasons and increased environmental awareness, the covalent modification of wood is becoming increasingly important. For that purpose, the application of benzotriazolyl-activated carboxylic acids provides an extremely effective and environmentally friendly method for this type of durable wood modification. High-resolution microcomputed tomography images were taken of pine wood blocks esterified with an activated p-bromobenzoic acid in order to get a deeper insight into the penetration behavior of the reagents into the wood structure. The tomographic investigations allowed the analysis of the bound reagent at two different tomographic resolutions. At low resolution (14 μm voxel size), highly modified regions were observed near the sample surface at the macroscopic level, while the modification had decreased in intensity inward. At high resolution (1 μm voxel size), detailed visualizations at the microscopic level revealed that the modifying reagents penetrate the earlywood completely (near the sample surface), while the latewood revealed regions of higher and lower intensity of modification of the outer cell walls. This observation provides information on the distribution pattern of the modifying reagent in latewood. In detail, the tomographic images highlighted that wood rays and resin canals are pathway traits for the modifying reagents to locally penetrate deeper into the wood tissue, in particular from earlywood into latewood. We demonstrated that the use of various resolutions contributes to the three-dimensional examination of modified wood from the macroscopic level toward the microscopic level. Thereby, we revealed boundaries of the use of XμCT (e.g., voxel contrast) that researchers should be aware of.},
number = {19},
urldate = {2020-05-25},
journal = {ACS Sustainable Chemistry \& Engineering},
author = {Söftje, Martin and Koddenberg, Tim and Militz, Holger and Drafz, Martin H. H. and Namyslo, Jan C. and Kaufmann, Dieter E.},
month = may,
year = {2020},
note = {Publisher: American Chemical Society},
keywords = {XµCT, image analysis, Bromine, Conifer wood, Wood protection},
pages = {7353--7358},
file = {ACS Full Text Snapshot:C\:\\Users\\Eva\\Zotero\\storage\\U9FYMQB9\\acssuschemeng.html:text/html;ascecg.2020.8.issue-19.largecover.jpeg:C\:\\Users\\Eva\\Zotero\\storage\\WHKFK6C4\\ascecg.2020.8.issue-19.largecover.jpeg:image/jpeg;Söftje et al. - 2020 - Chemistry and Spectroscopy of Renewable Materials,.pdf:C\:\\Users\\Eva\\Zotero\\storage\\QQ22TXE9\\Söftje et al. - 2020 - Chemistry and Spectroscopy of Renewable Materials,.pdf:application/pdf},
}
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High-resolution microcomputed tomography images were taken of pine wood blocks esterified with an activated p-bromobenzoic acid in order to get a deeper insight into the penetration behavior of the reagents into the wood structure. The tomographic investigations allowed the analysis of the bound reagent at two different tomographic resolutions. At low resolution (14 μm voxel size), highly modified regions were observed near the sample surface at the macroscopic level, while the modification had decreased in intensity inward. At high resolution (1 μm voxel size), detailed visualizations at the microscopic level revealed that the modifying reagents penetrate the earlywood completely (near the sample surface), while the latewood revealed regions of higher and lower intensity of modification of the outer cell walls. This observation provides information on the distribution pattern of the modifying reagent in latewood. 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For that purpose, the application of benzotriazolyl-activated carboxylic acids provides an extremely effective and environmentally friendly method for this type of durable wood modification. High-resolution microcomputed tomography images were taken of pine wood blocks esterified with an activated p-bromobenzoic acid in order to get a deeper insight into the penetration behavior of the reagents into the wood structure. The tomographic investigations allowed the analysis of the bound reagent at two different tomographic resolutions. At low resolution (14 μm voxel size), highly modified regions were observed near the sample surface at the macroscopic level, while the modification had decreased in intensity inward. At high resolution (1 μm voxel size), detailed visualizations at the microscopic level revealed that the modifying reagents penetrate the earlywood completely (near the sample surface), while the latewood revealed regions of higher and lower intensity of modification of the outer cell walls. This observation provides information on the distribution pattern of the modifying reagent in latewood. In detail, the tomographic images highlighted that wood rays and resin canals are pathway traits for the modifying reagents to locally penetrate deeper into the wood tissue, in particular from earlywood into latewood. We demonstrated that the use of various resolutions contributes to the three-dimensional examination of modified wood from the macroscopic level toward the microscopic level. 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