| 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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Padding, Jt Johan
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Topics
Publications (7/7 displayed)
- 2017Elastic instabilities in pillared micro channels in effect to polymer flooding
- 2017Elastic instabilities in pillared micro channels in effect to polymer flooding
- 2012Quantitative mesoscale modeling of the oscillatory and transient shear rheology and the extensional rheology of pressure sensitive adhesivescitations
- 2011Mesoscale modeling of the rheology of pressure sensitive adhesives through inclusion of transient forcescitations
- 2008Spinodal decomposition of asymmetric binary fluids in a micro-Couette geometry simulated with molecular dynamicscitations
- 2005Brownian dynamics simulations of the self- and collective rotational diffusion coefficients of rigid long thin rodscitations
- 2004Evidence for diffusion-controlled recombination kinetics in model wormlike micellescitations
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article
Evidence for diffusion-controlled recombination kinetics in model wormlike micelles
Abstract
We study the recombination kinetics and stress relaxation in a generic reversible polymer model, which is believed to resemble a wormlike micellar system. We find evidence that, at high concentrations, the recombination kinetics in this model cannot be described by a mean-field approach, but is diffusion-controlled and dominated by self-recombination events. We observe that the long-time stress relaxation of unentangled chains is proportional to v1/texp[-t/¿relax], with a relaxation time given by ¿relax = (th2/3¿ <L >1/3 where th is the average diffusion time to a different chain end, and ¿<L > is the characteristic relaxation time of a system of "dead" polymers of length equal to the average micellar length. A recombination activation barrier is needed to drive the system towards mean-field behaviour. This, in its turn, is often required in order to realistically model the rheology and dynamics of wormlike micelles.