| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Immonen, Kirsi
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2025A skeletonization-based approach for individual fiber separation in tomography images of biocomposites
- 2024Effect of unbleached and bleached softwood cellulose pulp fibers on poly(lactic acid) propertiescitations
- 2024Biocomposites through foam-forming of long fiber suspensions
- 2023Effect of accelerated aging on properties of biobased polymer films applicable in printed electronicscitations
- 2022Recycling of 3D Printable Thermoplastic Cellulose-Compositecitations
- 2022Biocomposite modeling by tomographic feature extraction and synthetic microstructure reconstructioncitations
- 2022Novel Cellulose based Composite Material for Thermoplastic processing
- 2021Oriented and annealed poly(lactic acid) films and their performance in flexible printed and hybrid electronicscitations
- 2021Oriented and annealed poly(lactic acid) films and their performance in flexible printed and hybrid electronicscitations
- 2021Thermoplastic Cellulose-Based Compound for Additive Manufacturingcitations
- 2020Feasibility of foam forming technology for producing wood plastic compositescitations
- 2020Impact of stone ground 'V-fines' dispersion and compatibilization on polyethylene wood plastic composites
- 2020Impact of stone ground 'V-fines' dispersion and compatibilization on polyethylene wood plastic composites
- 2020Poly(lactic acid)/pulp fiber compositescitations
- 2020Poly(lactic acid)/pulp fiber composites:The effect of fiber surface modification and hydrothermal aging on viscoelastic and strength propertiescitations
- 2019Material sorting using hyperspectral imaging for biocomposite recycling
- 2018Modelling of hygroexpansion in birch pulp - PLA composites
- 2018Modelling of hygroexpansion in birch pulp - PLA composites:A numerical approach based on X-ray micro-tomography
- 2018Totally bio-based, high-performance wood fibre biocomposites
- 2017Effects of Surfactants on the Preparation of Nanocellulose-PLA Compositescitations
- 2016Predicting stiffness and strength of birch pulp : polylactic acid compositescitations
- 2016Time-resolved X-ray microtomographic measurement of water transport in wood-fibre reinforced composite materialcitations
- 2016Highly porous fibre structures and biocomposites made of mixtures of wood, biopolymers and hemp
- 2016Predicting stiffness and strength of birch pulp:Polylactic acid compositescitations
- 2016Predicting stiffness and strength of birch pulp – Polylactic acid compositescitations
- 2015Improving mechanical properties of novel flax/tannin composites through different chemical treatmentscitations
- 2015Novel hybrid flax reinforced supersap composites in automotive applicationscitations
- 2011Potential of chemo- enzymatically modified CTMP in biocomposites
- 2011Immobilization of Trametes hirsuta laccase into poly(3,4-ethylenedioxythiophene) and polyaniline polymer-matricescitations
Places of action
| Organizations | Location | People |
|---|
document
Highly porous fibre structures and biocomposites made of mixtures of wood, biopolymers and hemp
Abstract
Highly porous structures made by foam forming techniquefrom natural fibres have several possible futureapplications. Among these are acoustic materials orcushioning elements in packages. Certain compressionstrength level is needed in both applications. Weinvestigated the effect of fibre length distribution onthe compression strength using hemp bast fibres as longfibres, softwood cellulose as medium length fibres andlignin-rich fines made from spruce wood as the microfibre component. In addition wooden-like hemp shives wereused. The fibre mixtures were foamed with two differenttypes of surfactants: an anionic sodium dodecyl sulphate(SDS) surfactant that has a neutral effect on materialbonding and a non-ionic polyvinyl alcohol (PVA)surfactant that enhances bonding.Lignin-rich fines improved the compression strength inall fibre mixtures when SDS was used as the foamingsurfactant. The significance of fines addition was minorwith materials foamed with PVA. Long hemp bast fibresdecreased the compression strength with both surfactants.Addition of stiff hemp shives with bonding enhancingsurfactant resulted in good compression strength.Overall, surfactant selection between a bonding andnon-bonding one had a larger effect on the compressionstrength compared to the selected fibre types and fibremixtures.Hemp is one of the annual crops, which use has increasedin different applications in recent years. Thetraditional use of hemp fibre is in textiles, but the usein different composites, nonwovens and even medicalapplications has increased. Hemp fibre in plant islocated in stem and it's mechanical performance iscomparable to glass fibre properties making it goodchoice for reinforcement in biocomposites. We studiedhemp fibre and shive in different potential applicationsfrom composites to non-woven structures and hemp basednanocelluloses in order to find potential novel uses forhemp.According to the preliminary results hemp fibre andshives are potential raw materials in natural-fibreplastic composites. In strength point of view it competeswith other cellulose based composites and gives newvisual design aspects for the material. Nanocellulosemade of hemp fibres formed highly viscous hydrogel, whichis attractive as a reinforcing component, rheologymodifier and film forming material. Their characteristicscan be further improved by chemical pre-treatments. Hempbased nanocelluloses have similar or even bettercharacteristics compared to the commercial and wood-basednanocelluloses.