| 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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Mikkonen, Kirsi
University of Helsinki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Protective role of wood hemicelluloses: Enhancing yeast probiotics survival in spray drying and storagecitations
- 2022Emulsion characterization via microfluidic devicescitations
- 2021Green Fabrication Approaches of Lignin Nanoparticles from Different Technical Ligninscitations
- 2020Comparison of novel fungal mycelia strains and sustainable growth substrates to produce humidity-resistant biocompositescitations
- 2019The Hydrophobicity of Lignocellulosic Fiber Network Can Be Enhanced with Suberin Fatty Acidscitations
- 2019Emulsifier composition of solid lipid nanoparticles (SLN) affects mechanical and barrier properties of SLN-protein composite filmscitations
- 2018Physicochemical and rheo-mechanical properties of titanium dioxide reinforced sage seed gum nanohybrid hydrogelcitations
- 2018Novel nanobiocomposite hydrogels based on sage seed gum-Laponite: Physico-chemical and rheological characterizationcitations
- 2017Synchrotron microtomography reveals the fine three-dimensional porosity of composite polysaccharide aerogelscitations
- 2017Spruce gum – a new natural Nordic stabilizer
- 2016Softwood-based sponge gelscitations
- 2010Comparison of microencapsulation properties of spruce galactoglucomannans and arabic gum using a model hydrophobic core compoundcitations
- 2008Films from spruce galactoglucomannan blended with poly(vinyl alcohol), corn arabinoxylan, and konjac glucomannan
Places of action
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article
Synchrotron microtomography reveals the fine three-dimensional porosity of composite polysaccharide aerogels
Abstract
This study investigates the impact of ice-templating conditions on the morphological features of composite polysaccharide aerogels in relation to their mechanical behavior and aims to get a better insight into the parameters governing these properties. We have prepared polysaccharide aerogels of guar galactomannan (GM) and tamarind seed xyloglucan (XG) by enzymatic oxidation with galactose oxidase (GaO) to form hydrogels, followed by conventional and unidirectional ice-templating (freezing) methods and lyophilization to form aerogels. Composite polysaccharide aerogels were prepared by incorporating nanofibrillated cellulose (NFC) into polysaccharide solutions prior to enzymatic oxidation and gel formation; such a cross linking technique enabled the homogeneous distribution of the NFC reinforcement into the gel matrix. We conducted phase-enhanced synchrotron X-ray microtomography (XMT) scans and visualized the internal microstructure of the aerogels in three-dimensional (3D) space. Volume-weighted pore-size and pore-wall thickness distributions were quantitatively measured and correlated to the aerogels’ mechanical properties regarding ice-templating conditions. Pore-size distribution and orientation depended on the ice-templating methods and the NFC reinforcement that significantly determined the mechanical and shape-recovery behavior of the aerogels. The results obtained will guide the design of the microporous structure of polysaccharide aerogels with optimal morphology and mechanical behavior for life-sciences applications.