| 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 |
|
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
| Organizations | Location | People |
|---|
article
Impact of Multiple Reprocessing on Properties of Polyhydroxybutyrate and Polypropylene
Abstract
Biobased plastics have the potential to be sustainable, but to explore their circularity further, current end-of-life options need to be broadened. Mechanical recycling is one of the most accepted methods to bring back plastics into the loop. Polyhydroxybutyrates (PHBs) are biobased and biodegradable in nature with promising properties and varied applications in the market. This study focuses on their potential for mechanical recycling by multiple extrusion cycles (E1–E5) and multi-faceted characterization of the virgin (V) and reprocessed materials from E1 to E5. The behavior is compared to polypropylene (PP) as a reference with a similar property profile, which has also been reprocessed five times. The thermal properties of both series showed a stable melting point and thermal decomposition temperature from thermal analyses (differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA)). However, a steady increase in the degree of crystallinity was observed which could counterbalance the decrease in molecular weight due to repeated extrusion measured by gel permeation chromatography and resulted in similar values of tensile strength across the cycles. The strain at break was impacted after the first extrusion, but no significant change was observed thereafter; the same was observed for impact strength. Even in scanning electron microscopy (SEM) images, virgin and E5 samples appeared similar, showing the stability of morphological characteristics. Fourier transform infrared spectroscopy (FTIR) results revealed that no new groups are being formed even on repeated processing. The deviation between the PHB and PP series was more predominant in the melt mass flow rate (MFR) and rheology studies. There was a drastic drop in the MFR values in PHB from virgin to E5, whereas not much difference was observed for PP throughout the cycles. This observation was corroborated by frequency sweeps conducted with the parallel plate method. The viscosity dropped from virgin to E1 and E2, but from E3 to E5 it presented similar values. This was in contrast to PP, where all the samples from virgin to E5 had the same values of viscosity. This paper highlights the possibilities of mechanical recycling of PHB and explains why future work with the addition of virgin material and other additives is an area to be explored.