| People | Locations | Statistics |
|---|---|---|
| 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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Frauenrath, Holger
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Performance polyamides built on a sustainable carbohydrate corecitations
- 2023Synthesis of polysiloxane elastomers modified with sulfonyl side groups and their electromechanical responsecitations
- 2023Reversible microscale assembly of nanoparticles driven by the phase transition of a thermotropic liquid crystalcitations
- 2023A toolbox of oligopeptide-modified polymers for tailored elastomerscitations
- 2022Spontaneous formation of a self-healing carbon nanoskin at the liquid-liquid interfacecitations
- 2022Enhanced ductility in high performance polyamides due to strain-induced phase transitionscitations
- 2022Enhanced ductility in high performance polyamides due to strain-induced phase transitionscitations
- 2022Transient elastomers with high dielectric permittivity for actuators, sensors, and beyondcitations
- 2021Polysiloxanes modified with different types and contents of polar groups: synthesis, structure, and thermal and dielectric propertiescitations
- 2021High-performance polyamides with engineered disordercitations
- 2020Engineering polymers with improved charge transport properties from bithiophene-containing polyamidescitations
- 2017High-temperature copolyamides obtained by the efficient transamidation of crystalline-crystalline polyamide blendscitations
- 2014A toolbox of oligopeptide-modified polymers for tailored elastomerscitations
Places of action
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article
High-performance polyamides with engineered disorder
Abstract
The extraordinary property profiles of many biological materials derive from their hierarchical structure and control of order and disorder at different length scales. Application of these concepts to the design of synthetic polymers may provide new routes to lightweight materials that combine high stiffness, strength, and toughness. Here, we use high-temperature reactive melt extrusion to introduce aliphatic substitutional defects into a high-performance semiaromatic copolyamide that are able to conform to the dominant crystalline phase. This allows us to generate microstructural disorder while maintaining or even increasing the macroscopic degree of crystallinity, and hence engineer a strain-induced phase transformation in the resulting polyamides that results in an increase in chain extension along the tensile axis in the crystalline regions. The yield stress and stiffness consequently remain comparable to those of the base semiaromatic polyamide, but the strain-to-failure and tensile toughness increase more than five-fold. Tailoring the concentration and distribution of microstructural defects is hence a straightforward and powerful strategy for optimizing performance in semicrystalline polyamides. ; Peer Reviewed ; Postprint (author's final draft)