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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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Schmidt, Daniel
Luxembourg Institute of Science and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Non-destructive testing of challenging aerospace structures
- 2024The effect of low temperatures on monitoring structural health using acoustic-ultrasonic piezoelectric transducers on composite structures.
- 2024Transforming martensite in NiTi within nanosecondscitations
- 2024In-cycle evolution of thickness and roughness parameters during oxygen plasma enhanced ZnO atomic layer deposition using in situ spectroscopic ellipsometry
- 20234D Printing of Electroactive Triple-Shape Compositescitations
- 2023Optimization of HIV testing services in Germany using HIV indicator diseases: study protocol of the HeLP studycitations
- 2022RAFT solution copolymerization of styrene and 1,3-butadiene and its application as a tool for block copolymer preparationcitations
- 2022What is the speed limit of martensitic transformations?citations
- 20224D Printing of Multicomponent Shape-Memory Polymer Formulationscitations
- 2015Structural and optical properties of cobalt slanted nanopillars conformally coated with few-layer graphenecitations
- 2013Design of mode selective actuators for Lamb wave excitation in composite platescitations
- 2012Characterization of mode selective actuator and sensor systems for Lamb wave excitation
- 2012Optical properties of cobalt slanted columnar thin films passivated by atomic layer depositioncitations
- 2012Aging Effects of As-deposited and Passivated Cobalt Slanted Columnar Thin Filmscitations
Places of action
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article
4D Printing of Electroactive Triple-Shape Composites
Abstract
Triple-shape polymers can memorize two independent shapes during a controlled recovery process. This work reports the 4D printing of electro-active triple-shape composites based on thermoplastic blends. Composite blends comprising polyester urethane (PEU), polylactic acid (PLA), and multiwall carbon nanotubes (MWCNTs) as conductive fillers were prepared by conventional melt processing methods. Morphological analysis of the composites revealed a phase separated morphology with aggregates of MWCNTs uniformly dispersed in the blend. Thermal analysis showed two different transition temperatures based on the melting point of the crystallizable switching domain of the PEU (Tm~50 ± 1 °C) and the glass transition temperature of amorphous PLA (Tg~61 ± 1 °C). The composites were suitable for 3D printing by fused filament fabrication (FFF). 3D models based on single or multiple materials were printed to demonstrate and quantify the triple-shape effect. The resulting parts were subjected to resistive heating by passing electric current at different voltages. The printed demonstrators were programmed by a thermo-mechanical programming procedure and the triple-shape effect was realized by increasing the voltage in a stepwise fashion. The 3D printing of such electroactive composites paves the way for more complex shapes with defined geometries and novel methods for triggering shape memory, with potential applications in space, robotics, and actuation technologies.