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dc.contributor.authorWagih, Ahmed
dc.contributor.authorHasani, Merima
dc.contributor.authorHall, Stephen A.
dc.contributor.authorNovak, Vladimir
dc.contributor.authorTheliander, Hans
dc.date.accessioned2022-04-21T08:28:21Z
dc.date.available2022-04-21T08:28:21Z
dc.date.issued2022-03-16
dc.identifier.citationWagih, A., Hasani, M., Hall, S. A., Novak, V., & Theliander, H. (2022). In situ microstructural evolution of spruce wood during soda pulping using synchrotron X-ray tomography. Holzforschung, 0(0). https://doi.org/10.1515/hf-2021-0204
dc.identifier.issn0018-3830
dc.identifier.issn1437-434X
dc.identifier.doi10.1515/hf-2021-0204
dc.identifier.urihttp://hdl.handle.net/10754/676404
dc.description.abstractA new laboratory reactor to perform in situ studies of structural changes in wood during soda pulping using synchrotron X-ray tomography is presented. The reactor is of recirculation type to provide stable reaction conditions and mimic the industrial situation. Experiments have been performed using this reactor in situ at a synchrotron microtomography beamline to provide sequences of 3D images from which measurement of wood cell wall thickness have been possible for the first time. The results showed that the cell wall thickness increased significantly in the early stage of pulping (<10 min), which is due to the transportation of cooking chemicals through the tracheids, resin channels and pits into the cell wall, which is swollen with the increased pH. Subsequently, the cell wall thickness reduces over the processing time up to 60 min with a high rate, which is inferred to be due to the dissolution and transport of lignin and hemicellulose from the secondary walls, allowing for better transportation of active chemicals deep through the cell wall layers. After 60 min processing, the cell wall thickness reduction rate reduced, as dissolution of lignin and hemicelluloses from the cell walls ceased, while the remaining dissolution occurs mainly at the middle lamella
dc.description.sponsorshipThe authors would like to acknowledge the ForMax pre-project initiative financed by the Swedish Government and the “FORMAX-portal - access to advanced X-ray methods for forest industry” (VR project no.: 2018-06469). V. Novak acknowledges funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 701647.
dc.description.sponsorshipThe authors acknowledge the Paul Scherrer Institute, Villigen, Switzerland for provision of synchrotron radiation beamtime at the TOMCAT beamline X02DA of the SLS. Moreover, the authors acknowledge Dr. Jonas Engqvist for helping in modifying the device to be mounted over the beamline bed. Finally, the authors acknowledge Dr. Sara Johansson for her help in performing synchrotron inspection
dc.publisherWalter de Gruyter GmbH
dc.relation.urlhttps://www.degruyter.com/document/doi/10.1515/hf-2021-0204/html
dc.relation.urlhttps://www.dora.lib4ri.ch/psi/islandora/object/psi%3A41660/datastream/PDF/Wagih-2022-In_situ_microstructural_evolution_of-%28published_version%29.pdf
dc.rightsArchived with thanks to Holzforschung
dc.rightsThis file is an open access version redistributed from: https://www.dora.lib4ri.ch/psi/islandora/object/psi%3A41660/datastream/PDF/Wagih-2022-In_situ_microstructural_evolution_of-%28published_version%29.pdf
dc.titleIn situ microstructural evolution of spruce wood during soda pulping using synchrotron X-ray tomography
dc.typeArticle
dc.contributor.departmentKing Abdullah University of Science and Technology , Thuwal , Saudi Arabia
dc.identifier.journalHolzforschung
dc.rights.embargodate2023-03-16
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionForest Products and Chemical Engineering , Chalmers University of Technology , SE-412 96 Gothenburg , Sweden
dc.contributor.institutionMechanical Design and Production Department, Faculty of Engineering , Zagazig University , P.O. Box 44519 , Zagazig , Egypt
dc.contributor.institutionWallenberg Wood Science Center , Chalmers University of Technology , SE-41296 Gothenburg , Sweden
dc.contributor.institutionDivision of Solid Mechanics , Lund University , Lund , Sweden
dc.contributor.institutionLund Institute of Advanced Neutron and X-ray Science , Lund , Sweden
dc.contributor.institutionPaul Scherrer Institute, Swiss Light Source , Forschungsstr. 111 , 5232 Villigen PSI , Switzerland
kaust.personWagih, Ahmed
dc.identifier.eid2-s2.0-85127130267


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