Abstract
We report on transient electrooptic birefringence experiments on dead (poly(styrene) in 1,4 dioxane) and living (lecithin/water/iso-octane microemulsions) polymer solutions. We find it impossible to obtain reliable information on the electrooptical behavior of dead polymers in the semi-dilute regime. Comparison with the behavior of worm-like micellar solutions forming living polymer systems is therefore also ruled out. The interesting data obtained on the latter system, however, easily compensate for this negative result. The data seem to support the idea that branching rather than entanglement plays a key role in this worm-like micellar systems.
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