  Step strain experiments and dynamic light scattering measurements are
perfomed to characterize the dynamic behavior of an o/w droplet microemulsion
into which is incorporated a telechelic polymer. At sufficient droplet and
polymer concentrations, above the percolation threshold, the system is
viscoelastic and its dynamic structure factor shows up two steps for the
relaxation of concentration fluctuations: the fast one is dominated by the
diffusion but the slower one is almost independent of the wave vector. The
terminal time of the stress relaxation tR and the slow time of the dynamic
structure factor tS are both presumably controlled by the residence time of a
sticker in a droplet: consistently, tR and tS are of the same order, they both
vanishes at the percolation threshold according to power laws but with
different exponents. We discuss these features in terms of deviations at the
transition, from the usual mean field description of the dynamics of transient
networks.
