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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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Sanchez-Ferrer, Antoni
Technical University of Munich
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (5/5 displayed)
- 2020Metal ions confinement defines the architecture of G-quartet, G-quadruplex fibrils and their assembly into nematic tactoidscitations
- 2020Structure–property relationships of cellulose nanofibril hydro- and aerogels and their building blockscitations
- 2016Solvent-mediated conductance increase of dodecanethiol-stabilized gold nanoparticle monolayerscitations
- 2013Enhanced properties of polyurea elastomeric nanocomposites with anisotropic functionalised nanofillerscitations
- 2012Investigation of Relaxation Processes in Nanocomposites by Transient Grating Experimentscitations
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article
Investigation of Relaxation Processes in Nanocomposites by Transient Grating Experiments
Abstract
<jats:p>We report a comparative study on the photo-elastic and photo-thermal features of two nanocomposites based on MoS2 nanotubes dispersed into two different polyurea elastomeric matrices, which have different crosslinking properties. The time-resolved laser spectroscopic investigation on these nanocomposites by transient grating (TG) experiments has been performed. The relaxation kinetics on a very wide time scale has been measured from nanosecond to hundred of microseconds. The TG data on both pure polymers shows fast acoustic oscillations and a slow thermal decay. No structural relaxation is appearing in the experimental time window. Surprisingly, the presence of nanotubes in both the polymeric matrixes induces intermediate dynamics clearly detected by the TG signal. The features of this unexpected dynamic features recall the structural relaxation typical of glass-formers but its origin is still unclear.</jats:p>