For polymeric nanoparticle synthesis, there are different ways to synthesize them. though, i guess it would be good to synthesize them via reverse emulsion method.you will find many protocol using reverse emulsion method.
a number of techniqeus can be used to synthesized polymer nanoparticles. Among them, self-assembly is popular due to being simple, easy and fast. Self-assembly polymer nanoparticles generally have size larger than 40 nm. For polymer nanoparticles less than 10 nm, you may consider disassembly strategy that we developed recently. If interested, pls find more detailed information in our Polymer Chemistry papers.