| 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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Gaugler, Marc
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2022Extrusion of PHA-containing bacterial biomass and the fate of endotoxinscitations
- 2020Effect of processing conditions on wood and glass fiber length attrition during twin screw composite compoundingcitations
- 2019Integrating softwood biorefinery lignin into polyhydroxybutyrate composites and application in 3D printingcitations
- 2019A new methodology for rapidly assessing interfacial bonding within fibre-reinforced thermoplastic compositescitations
- 2019Rheological behavior of high cell density Pseudomonas putida LS46 cultures during production of medium chain length Polyhydroxyalkanoate (PHA) Polymerscitations
- 2019Quantitative assessment and visualisation of the wood and poly(lactic acid) interface in sandwich laminate compositescitations
- 2016Green route to modification of wood waste, cellulose and hemicellulose using reactive extrusioncitations
- 2007Thermal degradation of polyphenolic containing bark extracts
Places of action
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article
Integrating softwood biorefinery lignin into polyhydroxybutyrate composites and application in 3D printing
Abstract
The massive volumes of residual lignin that will be generated as a biorefinery industry by-product provide an<br/>opportunity for bio-composite manufacture. In this context, biorefinery lignin produced from the saccharification<br/>of Pinus radiata wood pulp without any further derivatization or coupling or chemical modifications was<br/>blended and melt extruded with polyhydroxybutyrate (PHB) to form composite filaments. The filaments were<br/>cut into pellets and compression moulded into films. The pellets/films were characterised by FTIR, SEM, 13C<br/>NMR, water contact angle, TGA and DSC. The FTIR and SEM analyses suggested a particulate polymer composite<br/>in which filaments have a PHB-rich surface and discrete lignin particles contained within the filament core. The<br/>13C NMR spectroscopy showed the proportion of phenolic carbon signal associated with aromatic moieties in<br/>lignin increased with the proportion of the biorefinery lignin added into the composite. The decomposition,<br/>melting and crystallization temperature of PHB polymer did not appreciably change after the inclusion of<br/>biorefinery lignin into the composite. The PHB composite containing biorefinery lignin had a shear thinning<br/>profile which enhanced layer adhesion during 3D printing. The water contact angle of the moulded films was<br/>increased with the addition of the biorefinery lignin indicating lignin exerted a hydrophobic effect on the PHB<br/>films. The rheology results indicate that lignin when added as a filler at 20% w/w changes melt viscosity and is<br/>conducive for 3D printing. Hence, as an example of the additive manufacturing, the extruded composite filament<br/>with 20% biorefinery lignin was 3D printed and showed between 34 to 78% less warpage compared to the 100%<br/>PHB printed object. Incorporating biorefinery lignin into 3D printed PHB filaments represents a potential application<br/>for valorising softwood biorefinery lignin.