The droplet phase of a water-in-oil microemulsion is used as a matrix
to create amphiphilic polymer network structures from a polytoxyethyle
ne)-poly(isoprene)-poly(oxyethylene) triblock copolymer bearing polyme
rizable methacrylate end groups. Conductivity measurements and freeze
fracture electron microscopy are used to obtain information about the
structure of these gels. The droplet structure of the underlying micro
emulsion is only preserved for low droplet and polymer concentration.
For higher concentrations the crosslinking reaction can induce the for
mation of a bicontinuous structure.