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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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Cataldi, Pietro
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2022Hazard Assessment of Abraded Thermoplastic Composites Reinforced with Reduced Graphene Oxidecitations
- 20223D cellulose fiber networks modified by PEDOT:PSS/graphene nanoplatelets for thermoelectric applicationscitations
- 2021Zinc Polyaleuritate Ionomer Coatings as a Sustainable, Alternative Technology for Bisphenol A-Free Metal Packagingcitations
- 2020Plant-Inspired Polyaleuritate–Nanocellulose Composite Photonic Filmscitations
- 2020Green Biocomposites for Thermoelectric Wearable Applicationscitations
- 2020Sustainable, high barrier polyaleuritate/nanocellulose biocompositescitations
- 2020Multifunctional Biocomposites Based on Polyhydroxyalkanoate and Graphene/Carbon Nanofiber Hybrids for Electrical and Thermal Applicationscitations
- 2019Green Biocomposites for Thermoelectric Wearable Applicationscitations
- 2019Keratin-Graphene Nanocomposite: Transformation of Waste Wool in Electronic Devicescitations
- 2018Fully-sprayed flexible polymer solar cells with a cellulose-graphene electrodecitations
- 2018Graphene Nanoplatelets-Based Advanced Materials and Recent Progress in Sustainable Applicationscitations
- 2016Effect of graphene nano-platelet morphology on the elastic modulus of soft and hard biopolymerscitations
- 2016Effect of graphene nano-platelet morphology on the elastic modulus of soft and hard biopolymerscitations
Places of action
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article
Effect of graphene nano-platelet morphology on the elastic modulus of soft and hard biopolymers
Abstract
Free-standing biocomposites were fabricated by solvent casting and hot-pressing employing two bio-polyesters having diverse elastic (Young's) moduli (soft and hard), reinforced with different graphene nanoplatelets (GnPs). Systematic mechanical measurements were conducted to investigate the effect of GnP thickness and lateral size on the elastic moduli. Comparisons were made with other reinforcing nanostructured filers such as organoclay, MoS2, Fe2O3, carbon black and silica nanoparticles. Upon solvent casting, GnPs did not perform better than the other model fillers in increasing the elastic modulus of the soft bio-polyester. Upon hot-pressing however, large (>300 nm) multi-layer GnPs (≥8 layers) more than doubled the elastic modulus of the soft bio-polyester matrix compared to other GnPs and fillers. This effect was attributed to the optimized alignment of the large 2D GnP flakes within the amorphous soft polymer. In contrast, hot-pressing did not yield superior elastic modulus enhancement for the hard bio-polyester when hot-pressed. GnPs only induced 30% enhancement for both processes. Moreover, multi-layer large GnPs were shown to suppress the thermally-induced stiffness reduction of the soft bio-polyester near its melting temperature. A theoretical analysis based on the spring network model is deployed to describe the impact of the GnP alignment on the elastic moduli enhancement.