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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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Pääkkönen, Elina
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2023Durability of sandwich structures with a maximized natural raw material basis
- 2023High consistency foam in pilot scale
- 2023Durability of sandwich structures with a maximized natural raw material basis:Comparison of expanded polystyrene, cellulose foam and polylactic acid subjected to UV-rain aging
- 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
- 2017Recycled fibres and fibre sludge as reinforcement materials in injection moulded PP and PLA compositescitations
- 2016Recycled fibres and fibre sludge as reinforcement materials in injection molded composites
- 2016Wood fibre based thermal insulation and sound absorption materials made by foam forming
- 2013Porous wood fibre structures for tomorrow markets
- 2013Enhanced wood plastic composites
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document
Enhanced wood plastic composites
Abstract
In the study, two wood fibre types, bleached softwoodkraft pulp (BSKP) and thermomechanical pulp (TMP) withfibre lengths of 2.28 and 1.40 mm, respectively, weremelt processed with poly(lactic acid) (PLA) using atwin-screw extruder to fibre content of 30 wt-% andinjection moulded. In addition, three wood flour (WF)types especially targeted for wood plastic composites(WPC's) with average particle sizes of 915, 500 and 150?m were selected as wood fillers and processed with sameparameters. Microscopic analysis as well as macroscopicimages showed very uniform fibre dispersion in BSKP andTMP fibre composites, whereas with wood flours clearirregular particle sizes and shapes were visible. Elasticmodulus was increased with all the wood component types,but a clear reduction of impact strength and tensilestrength were seen in wood flour composites, a phenomenontypical to polymer fillers. The reinforcement capabilityof wood fibres comes apparent by detecting an increasedmaterial ductility and strength when wood in fibre formis used as reinforcement. In addition, water absorptionremained lower when fibres were used instead of woodflours. Thus, the use of wood fibres in WPC's instead ofconventional wood flours offers improved materialproperties, uniform appearance with colouringpossibilities and all together, an enhanced bio-basedmaterial for added-value products.