| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Rautkari, Lauri
Aalto University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2023Improving mechanical performance and functionality of birch veneer with mechano-enzymatic microfibrillated cellulose coatingcitations
- 2023Evaluating the quality of surface carbonized woods modified with a contact charring or a gas flame charring techniquecitations
- 2022Decay Resistance of Surface Carbonized Woodcitations
- 2022Effect of Moisture on Polymer Deconstruction in HCl Gas Hydrolysis of Woodcitations
- 2022Moisture Sorption of Wood Surfaces Modified by One-Sided Carbonization as an Alternative to Traditional Façade Coatingscitations
- 2021Bioinspired living coating system in service: evaluation of the wood protected with biofinish during one-year natural weatheringcitations
- 2021Deswelling of microfibril bundles in drying wood studied by small-angle neutron scattering and molecular dynamicscitations
- 2021Water-accessibility of interfibrillar spaces in spruce wood cell wallscitations
- 2021Thermal modification of wood—a review: chemical changes and hygroscopicitycitations
- 2020Observing microfibril bundles in wood by small-angle neutron scattering
- 2020The effect of compression and incision on wood veneer and plywood physical and mechanical propertiescitations
- 2020Bundling of cellulose microfibrils in native and polyethylene glycol-containing wood cell walls revealed by small-angle neutron scatteringcitations
- 2020Effect of weathering on surface functional groups of charred norway spruce cladding panelscitations
- 2020Moisture-related changes in the nanostructure of woods studied with X-ray and neutron scatteringcitations
- 2020Resistance of thermally modified and pressurized hot water extracted Scots pine sapwood against decay by the brown-rot fungus Rhodonia placentacitations
- 2019Small-angle scattering model for efficient characterization of wood nanostructure and moisture behaviourcitations
- 2018The effect of de- and re-polymerization during heat-treatment on the mechanical behavior of Scots pine sapwood under quasi-static loadcitations
- 2018Sorption-related characteristics of surface charred spruce woodcitations
- 2018Influence of water and humidity on wood modification with lactic acidcitations
- 2018Thermal Isomerization of Hydroxyazobenzenes as a Platform for Vapor Sensingcitations
- 2018Thermal Isomerization of Hydroxyazobenzenes as a Platform for Vapor Sensingcitations
- 2017THE INFLUENCE OF THERMAL MODIFICATION ON VENEER BOND STRENGTH
- 2017Surface activation of wood by corona treatment and NaOH soaking for improved bond performance in plywoodcitations
- 2017Influence of temperature of thermal treatment on surface densification of sprucecitations
- 2017Pre-treatment with sodium silicate, sodium hydroxide, ionic liquids or methacrylate resin to reduce the set-recovery and increase the hardness of surface-densified scots pinecitations
- 2016Cladding boards in wooden facades
- 2015Influence of Welding Time on Tensile-Shear Strength of Linear Friction Welded Birch (Betula pendula L.) Woodcitations
- 2015High-Strength Composite Fibers from Cellulose-Lignin Blends Regenerated from Ionic Liquid Solutioncitations
- 2014Internal vapour pressure of plywood during hot pressing process (STSM funded by COST Action FP1006)
Places of action
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document
Observing microfibril bundles in wood by small-angle neutron scattering
Abstract
Observing microfibril bundles in wood by smallangle neutron scattering<br/>Cellulose is present in the cell walls of wood in the form of partially crystalline microfibrils, with a thickness of 2–3 nm. Lateral aggregation of the microfibrils into bundles, also termed macrofibrils, in the secondary cell walls has been reported by various methods (Sarkar et al. 2009; Adobes-Vidal et al. 2020), including atomic force microscopy, electron microscopy and electron tomography. The lateral size of microfibril bundles is usually in the range 15–20 nm, with some hemicelluloses and water ncluded within the bundle. However, none of the methods used so far has been able to observe these structures in their truly native state, as part of an intact cell wall structure and hydrated by liquid water.<br/><br/>Neutron and X-ray scattering are excellent tools for non-invasive characterization of the hierarchical structure of wood and other cellulosic materials (Rongpipi et al. 2019). With these methods, the properties of cellulose crystals and the packing of microfibrils can be analysed under various external conditions such as different humidity levels (Penttilä et al. 2020a). In the current work, we utilized small-angle neutron scattering (SANS) together with contrast variation by poly(ethylene glycol) (PEG) to assign a specific contribution in the SANS intensities of native wood to the outer dimensions of cellulose microfibril bundles (Penttilä et al. 2020b). This allowed us to detect the presence of microfibril bundles in the cell walls of different types of wood and to determine their diameter also in wood samples without PEG.