| Abstract
| - We investigate the critical role played by the mean micellar length during the route to rheochaos for wormlikemicellar gels of surfactant cetyltrimethylammonium tosylate in the presence of salt sodium chloride that show couplingof flow to concentration fluctuations. To this end, we have carried out stress/shear rate relaxation experiments at afixed shear rate/stress but at different temperatures to take the sample through the route to rheochaos. We see the type-IIintermittency route to rheochaos in stress relaxation measurements and the type-III intermittency route to rheochaosin shear rate relaxation measurements. We have also carried out linear rheology measurements at different temperaturesto estimate the mean micellar length L̄, the reptation time τrep, and the breaking time τbreak. It is shown that L̄ changesby ≈58%, as the sample goes through the route to rheochaos.
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