| 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
Does the strain hardening modulus of glassy polymers scale with the flow stress?
Abstract
Employing a generic coarse-grained bead-spring model, Hoy and Robbins (J Polym Sci Part B: Polym Phys 2006, 44, 3487-3500) reproduced important experimental observations on strain hardening, specifically the generally observed Gaussian strain hardening response and its dependence on network density and temperature. Moreover, their simulation results showed that the strain hardening response at different strain rates collapses to a single curve when scaled to the value of the flow stress, a phenomenon that has not yet been verified experimentally.In the present study the proposed scaling law is experimentally investigated on a variety of polymer glasses: poly(methyl methacrylate), poly(phenylene ether), polycarbonate, polystyrene and poly(ethylene terephthalate)-glycol. For these polymers true stress-strain curves in uniaxial compression were collected over a range of strain rates and temperatures and scaled to the flow stress. It was found that, generally, the curves do not collapse on a mastercurve. In all cases the strain hardening modulus is observed to increase linearly, but not proportionally to the flow stress. The experimental data, therefore, unambiguously demonstrate that the proposed scaling law does not apply within the range of temperature and strain rate covered in this study.