| 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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Edeleva, Mariya
Ghent University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Designing prepregnation and fused filament fabrication parameters for recycled PP- and PA-based continuous carbon fiber compositescitations
- 2024Bridging experimental data and flow modelling to maximize the lifetime of additive manufactured molds
- 2024Optimization of the 3D printing process of continuous carbon fiber prepreg filamentcitations
- 2024Combining ternary phase diagrams and multiphase coupled matrix-based Monte Carlo to model phase dependent compositional and molar mass variations in high impact polystyrene synthesiscitations
- 2024Playing with low amounts of expanded graphite for melt-processed polyamide and copolyester nanocomposites to achieve control of mechanical, tribological, thermal and dielectric propertiescitations
- 2024Upgrading analytical models to predict the onset of degradation in selective laser sinteringcitations
- 2023Playing with process conditions to increase the industrial sustainability of poly(lactic acid)-based materialscitations
- 2023Comparing thermal degradation for fused filament fabrication (FFF) with chain or step-growth polymers
- 2023Molecular pathways for polymer degradation during conventional processing, additive manufacturing, and mechanical recyclingcitations
- 2023Molecular scale-driven upgrading of extrusion technology for sustainable polymer processing and recyclingcitations
- 2023Carbon nitride grafting modification of poly(lactic acid) to maximize UV protection and mechanical properties for packaging applicationscitations
- 2023Impact of Multiple Reprocessing on Properties of Polyhydroxybutyrate and Polypropylenecitations
- 2022Setting the optimal laser power for sustainable powder bed fusion processing of elastomeric polyesters : a combined experimental and theoretical studycitations
- 2022Setting the optimal laser power for sustainable powder bed fusion processing of elastomeric polyesters : a combined experimental and theoretical studycitations
- 2022Thermal and thermal-oxidative molecular degradation of polystyrene and acrylonitrile butadiene styrene during 3D printing starting from filaments and pelletscitations
- 2022Lifting the sustainability of modified pet-based multilayer packaging material with enhanced mechanical recycling potential and processingcitations
- 2022Increasing the sustainability of the hybrid mold technique through combined insert polymeric material and additive manufacturing method designcitations
Places of action
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article
Thermal and thermal-oxidative molecular degradation of polystyrene and acrylonitrile butadiene styrene during 3D printing starting from filaments and pellets
Abstract
An important polymer processing technique is additive manufacturing (AM), which enables shape-free design of complex final parts with limited waste during the development change, at least if the impact of molecular degradation reactions is minimized. In the present work, polystyrene (PS) and acrylonitrile butadiene styrene (ABS) polymer have been processed via: (i) fused filament fabrication (FFF), separately accounting for the prior single screw extrusion (SSE) filament production; and (ii) pellet-based additive manufacturing (PBAM), which are two important AM techniques. The influence of printing temperature, layer thickness, printing velocity, and printing technique on the degradation of both polymeric materials is studied by means of thermogravimetric analysis (TGA), size exclusion chromatography (SEC), small amplitude oscillatory shearing tests (SAOS), Fourier-transform infrared spectroscopy (FTIR), and yellowness index (YI) measurements. For ABS, SSE-FF leads to more fission (higher mechanical loading) whereas PBAM results in more cross-linking (more thermal loading). For PS, fission is always dominant and this more evident under FFF conditions. ABS also exhibits yellowing upon processing, indicating thermo-oxidative degradation although below the FTIR sensitivity limit. The selected PBAM conditions with PS are already delivering printed specimens with good mechanical properties and lower degradation. For ABS, a further PBAM optimization is still desired compared to the FFF countercase, taking into account layer-by-layer adhesion.