PROCESS FOR SYNTHESIZING HYBRID CORE-SHELL MICROPARTICLES COMPRISING A POLYMER CORE AND A SILICON DIOXIDE SHELL WITH CONTROLLED STRUCTURE AND SURFACE

摘要

Hybrid microparticle comprising a polymer core and a shell which surrounds the polymer core at least in sections and which comprises a silicon dioxide layer; characterized by an RF value, the RF value being defined as the ratio of an external surface area amenable to the adsorption of nitrogen to a surface area which is computable from an arithmetic mean diameter of the hybrid microparticle considered as an ideal sphere, where the shell has a structure selected from: - closed and smooth, with the shell having an RF value of between 1 and 1.5; - closed and hillocky, with the shell having an RF value of between 1.51 and 3; or - open, with the shell having an RF value of greater than 3.01.