| 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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Tervoort, Theo A.
ETH Zurich
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024No yield stress requiredcitations
- 2023Evaluating the molecular weight distribution of ultrahigh molecular weight polypropylene through rheologycitations
- 2022Additive Manufacturing of Polyolefinscitations
- 2022Influence of electron-beam irradiation on plasticity-controlled and crack-growth-controlled failure in high-density polyethylenecitations
- 2022Influence of electron-beam irradiation on plasticity-controlled and crack-growth-controlled failure in high-density polyethylenecitations
- 2019Surface viscoelasticity in model polymer multilayerscitations
- 2018Three-dimensional printing of hierarchical liquid-crystal-polymer structurescitations
- 2017Modeling energy storage and structural evolution during finite viscoplastic deformation of glassy polymerscitations
- 2016High-performance liquid-crystalline polymer films for monolithic "composites"citations
- 2016Rejuvenation of PLLA: effect of plastic deformation and orientation on physical ageing in poly(ʟ-lactic acid) filmscitations
- 2008Does the strain hardening modulus of glassy polymers scale with the flow stress?citations
- 2008Kinetics of re-embrittlement of (anti)plasticized glassy polymers after mechanical rejuvenationcitations
- 2002Microcutting materials on polymer substrates
- 2000Strain-hardening behavior of polycarbonate in the glassy statecitations
Places of action
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article
Surface viscoelasticity in model polymer multilayers
Abstract
In the present work, a polymeric transient viscoelastic network is used as a model system to investigate several fundamentals of interfacial viscoelasticity and nonlinear behavior, in simple shear, compression, and for simple mixed deformations. A supramolecular polymer bilayer, characterized by long but finite relaxation times, is created at the water-air interface using a layer-by-layer assembly method. The possibility of studying the individual layers starting from an unstrained reference state enabled the independent quantification of the equilibrium thermodynamic properties, and the viscoelastic response of the bilayer could be studied separately for shear and compressional deformations. Time- and frequency-dependent material functions of the layer were determined in simple shear and uniform compression. Moreover, a quasilinear neo-Hookean model for elastic interfaces was adapted to describe step strain experiments on a viscoelastic system by allowing the material properties to be time-dependent. The use of this model made it possible to calculate the response of the system to step deformations. Within the linear response regime, both stress-strain proportionality and the superposition principle were investigated. Furthermore, the onset of nonlinear behavior of the extra stresses was characterized in shear and for the first time in pure compression. We conclude by investigating the multilayer system in a rising bubble setup and show that the neo-Hookean model is able to predict the extra and deviatoric surface stresses well up to moderate deformations.