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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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Schuschnigg, Stephan
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2024Simulation of the Melting Region in Additive Manufacturing Material Extrusion Dies for Highly Filled Feedstocks
- 2024Comparative analysis of binder systems in copper feedstocks for metal extrusion additive manufacturing and metal injection mouldingcitations
- 2024Production of Permanent Magnets from Recycled NdFeB Powder with Powder Extrusion Mouldingcitations
- 2024Binder System Composition on the Rheological and Magnetic Properties of Nd-Fe-B Feedstocks for Metal Injection Moldingcitations
- 2024Rapid tooling for rubber extrusion molding by digital light processing 3D printing with dual curable vitrimerscitations
- 2024Additive Manufacturing Material Extrusion @ Institute of Polymer Processing
- 2023Susmagpro
- 2023Debinding And Sintering Strategies For Fused Filament Fabrication Of Aluminium Alloyscitations
- 2023Effects of Different Polypropylene (PP)-Backbones in Aluminium Feedstock for Fused Filament Fabrication (FFF)citations
- 2023Validation Of Alternative Binders for Pellet Extrusion 3D Printing Of 316L Steels
- 2022Research Progress on Low-Pressure Powder Injection Moldingcitations
- 2022In-situ alignment of 3D printed anisotropic hard magnetscitations
- 2021Thermal conductive, electrically insulating polymer compounds using material extrusion additive manufacturing for electronic parts
- 2021Powder content in powder extrusion moulding of tool steelcitations
- 2020Additive Fertigung metallischer und keramischer Bauteile
- 2019Fabrication and properties of extrusion-based 3D-printed hardmetal and cermet componentscitations
- 2019Filament-extrusion 3D printing of hardmetal and cermet parts
- 2018Feedstocks for the Shaping-Debinding-Sintering Process of Multi Material Components
- 2018Adhesion of standard filament materials to different build platforms in material extrusion additive manufacturing
- 2018Material Extrusion Additive Manufacturing for Photocatalytic Applications
- 2018Highly-filled Polymers for Fused Filament Fabrication
- 2018Additive Manufacturing of Metallic and Ceramic Components by the Material Extrusion of Highly-Filled Polymerscitations
- 2018Polypropylene Filled With Glass Spheres in Extrusion‐Based Additive Manufacturingcitations
- 2017Effect of the printing bed temperature on the adhesion of parts produced by fused filament fabricationcitations
- 2016Dissipative particle dynamics simulations of orientation of layered silicate particles embedded in polymer melts under shear flowscitations
- 2016Structure of Polypropylene Macromolecules in the Vicinity of Fe2O3 Surface
- 2016Effect of Particle Size on the Properties of Highly-Filled Polymers for Fused Filament Fabrication
- 2016Bonding Forces in Fused Filament Fabrication
- 2016Coupled Orientation and Stretching of Chains in Mesoscale Models of Polydisperse Linear Polymers in Startup of Steady Shear Flow Simulationscitations
- 2016Haftungsvorhersage und Haftungsverbesserung im Fused Filament Fabrication (FFF) Prozess
- 2016Special Materials and Technologies for Fused Filament Fabrication
- 2016Properties for PIM Feedstocks Used in Fused Filament Fabrication
- 2016Optimization of twin screw extrusion using CFD for polymer/nanoclay composites
- 2015Optimization of Twin Screw Extrusion using CFD for Polymer/Nanoclay Composites
Places of action
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article
Dissipative particle dynamics simulations of orientation of layered silicate particles embedded in polymer melts under shear flows
Abstract
Orientation of anisometric layered silicate particles subject to shear flows has always been a crucial factor in the final microstructure of polymer nanocomposites in polymer processing. Plenty of experimental works and theoretical investigations have been conducted in order to provide an accurate understanding of the phenomena involved. The development of coarse-grained molecular simulation methods in recent years has made it possible to explore more details of pre-described systems under a variety of conditions. Dissipative particle dynamics (DPD) being one of them has been widely applied to study multicomponent materials. With the introduction of Lees-Edwards boundary conditions DPD was soon found to be an efficient method to simulate hydrodynamic systems considering its ability to access longer time scales compared with classic molecular dynamics. Here we report on the orientation of a semi-flexible 3-layered silicate particle embedded in a polymer matrix while imposed to shear flows. By applying different shearing directions the evolution of the orientation process from rest was recorded. 2D pair distribution functions in 3 orthogonal planes were calculated in order to provide a full description of the systems. For all directions regardless of the initial orientation of the layered silicate it was found that the layers rearrange so that their surface would be normal to the velocity gradient direction. At low shear-rates the orientation process was found to be unstable and ascribed to the thermal fluctuations and the instabilities in the velocity gradient throughout the system. Such a behavior was almost eliminated when the shear-rate and subsequently the Peclet number were increased. The calculation of the angles between the silicate layers and the flow and velocity gradient directions proved that no matter how the layers are oriented initially the evolution pattern of an oriented microstructure becomes smoother and faster with increasing the shear-rate.