Abstract
Inorganic microspheres made of calcium phosphates or cobalt ferrite were prepared in W/O/W dispersions. The production of inorganic microspheres sustaining the morphology of the inner droplets is supposed to involve elementary processes: the transportation of reactant species from the outer aqueous phase through the oil phase to the inner aqueous phase, reaction and nucleation, the growth of crystalline particles, the interconnection of particles, and the transfer of particles. The first process may most likely be driven by the mediation of inverse micelle. This explanation should be modified with considering the fact that microspheres are produced even at concentrations lower than the critical micelle concentration.
