| 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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Ketoja, Jukka A.
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2022Lignin interdiffusion - a mechanism behind improved wet strength
- 2022Utilizing and Valorizing Oat and Barley Straw as an Alternative Source of Lignocellulosic Fiberscitations
- 2022Utilizing and Valorizing Oat and Barley Straw as an Alternative Source of Lignocellulosic Fiberscitations
- 2021General mean-field theory to predict stress-compression behaviour of lightweight fibrous materials
- 2020Crossover from mean-field compression to collective phenomena in low-density foam-formed fiber materialcitations
- 2018Foam-formed fibre materials
- 2018Effect of cellulosic fibers on foam dynamics
- 2017Novel biobased micro- and nanomaterials in porous foam formed structures
- 2017Design-driven integrated development of technical and perceptual qualities in foam-formed cellulose fibre materialscitations
- 2017Design-driven integrated development of technical and perceptual qualities in foam-formed cellulose fibre materialscitations
- 2016Tailoring the microporous structure of fibre materials with foam carrier
- 2016Porous structure of fibre networks formed by a foaming process: a comparative study of different characterization techniquescitations
- 2015The effect of physical adhesion promotion treatments on interfacial adhesion in cellulose-epoxy
- 2014Wet fibre-laden foams in axial mixing with macro-instabilities
- 2013Bubble size and air content of wet fibre foams in axial mixing with macro-instabilitiescitations
- 2009Wet Web Rheology on a Paper Machine
- 2008Simulation of triaxial deformation of wet fiber networkscitations
Places of action
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article
Porous structure of fibre networks formed by a foaming process: a comparative study of different characterization techniques
Abstract
Recent developments in making fibre materials using thefoam-forming technology have raised a need tocharacterize the porous structure at low materialdensity. In order to find an effective choice among allstructure-characterization methods, both two-dimensionaland three-dimensional techniques were used to explore theporous structure of foam-formed samples made with twodifferent types of cellulose fibre. These techniquesincluded X-ray microtomography, scanning electronmicroscopy, light microscopy, direct surface imagingusing a CCD camera and mercury intrusion porosimetry. Themean pore radius for a varying type of fibre and forvarying foam properties was described similarly by allimaging methods. X-ray microtomography provided the mostextensive information about the sheet structure, andshowed more pronounced effects of varying foam propertiesthan the two-dimensional imaging techniques. Thetwo-dimensional methods slightly underestimated the meanpore size of samples containing stiff CTMP fibres withvoid radii exceeding 100 µm, and overestimated the poresize for the samples containing flexible kraft fibreswith all void radii below 100 µm. The direct rapidsurface imaging with a CCD camera showed surprisinglystrong agreement with the other imaging techniques.Mercury intrusion porosimetry was able to characterizepore sizes also in the submicron region and led to anincreased relative volume of the pores in the range ofthe mean bubble size of the foam. This may be related tothe penetration channels created by the foam-fibreinteraction.