| 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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Razzaq, Muhammad Yasar
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 20234D Printing of Electroactive Triple-Shape Compositescitations
- 20224D Printing of Multicomponent Shape-Memory Polymer Formulationscitations
- 2020Polyetheresterurethane based porous scaffolds with tailorable architectures by supercritical CO2 foamingcitations
- 2019Hydrolytic stability of aliphatic poly(carbonate-urea-urethane)s: Influence of hydrocarbon chain length in soft segmentcitations
- 2019Matching magnetic heating and thermal actuation for sequential coupling in hybrid composites by designcitations
- 2018Reprogrammable, magnetically controlled polymeric nanocomposite actuatorscitations
- 2018Reprogrammable, magnetically controlled polymeric nanocomposite actuatorscitations
- 2018Thermally-induced actuation of magnetic nanocomposites based on Oligo(ω-pentadecalactone) and covalently integrated magnetic nanoparticlescitations
- 2015Thermally Controlled Shape-Memory Investigations of Nanocomposites Based on Oligo(<i>ω</i>-pentadecalactone) and Magnetic Nanoparticles Acting as Crosslinkscitations
- 2013Tailoring the recovery force in magnetic shape-memory nanocompositescitations
- 2012Shape-Memory Properties of Nanocomposites based on Poly(ω-pentadecalactone) and Magnetic Nanoparticlescitations
- 2012Oligo(omega-pentadecalactone) decorated magnetic nanoparticlescitations
Places of action
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article
Tailoring the recovery force in magnetic shape-memory nanocomposites
Abstract
<jats:title>ABSTRACT</jats:title><jats:p>Composites from magnetic nanoparticles in a shape-memory polymer (SMP) matrix allow a remote actuation of the shape-memory effect by exposure to alternating magnetic fields. At the same time the incorporation of MNP may affect the thermal properties and the structural functions of the SMP.</jats:p><jats:p>Here, we explored the adjustability of the recovery force as an important structural function in magnetic shape-memory nanocomposites (mSMC) by variation of the programing temperature (<jats:italic>T</jats:italic><jats:sub>prog</jats:sub>) and nanoparticle weight content. The nanocomposites were prepared by coextrusion of silica coated magnetite nanoparticles (mNP) with an amorphous polyether urethane (PEU) matrix. In tensile tests in which <jats:italic>T</jats:italic><jats:sub>prog</jats:sub> was varied between 25 and 70 °C and the particle content from 0 to 10 wt% it was found that the Young’s moduli (<jats:italic>E</jats:italic>) decreased with temperature and particle content. Cyclic, thermomechanical experiments with a recovery module under strain-control conditions were performed to monitor the effect of mNP and <jats:italic>T</jats:italic><jats:sub>prog</jats:sub> on the recovery force of the composites. During the strain-control recovery the maximum stress (<jats:italic>σ</jats:italic><jats:sub>m,r</jats:sub>) at a characteristic temperature (<jats:italic>T</jats:italic><jats:sub>σ,max</jats:sub>) was recorded. By increasing the mNP content from 0 to 10 wt% in composites, <jats:italic>σ</jats:italic><jats:sub>m,r</jats:sub> of 1.9 MPa was decreased to 1.25 MPa at a <jats:italic>T</jats:italic><jats:sub>prog</jats:sub> = 25 °C. A similar decrease in <jats:italic>σ</jats:italic><jats:sub>m,r</jats:sub> for nanocomposites with different mNP content could be observed when <jats:italic>T</jats:italic><jats:sub>prog</jats:sub> was increased from 25 °C to 70 °C. It can be concluded that the lower the deformation temperature and the particle content the higher is the recovery force.</jats:p>