Studies on the syntheses of W/O ultra-concentrated emulsion grafting anionic or cationic monomers onto starch;

we research on that how to form a stable W/O emulsion with various emulsors.

At first, Pd(NO3)2 was recycled from the waste Pd-C catalyst, then, the palladium nanoparticles with size of 5 nm to 200 nm were generated in the O/W microemulsion of sodium dodecyl sulfate (SDS), Brij30 and H2O system by using nonionic surfactant Brij30 as the reducing agent.

Fine particles of polyaniline were prepared in (An+O/W microemulsion)two phase system in which the An phase was used as a monomer source and the O/W microemulsion phase for polymerization.

Experimental study on the preparation of O/W emulsions by SPG membrane emulsification;

The electrical conductivity of O/W emulsions with different oil volume fraction was measured.

In this paper, a review is presented focusing on the application of reversed micelles or w/o microemulsions to synthesizing nano-sized ultrafine particles, including precip itation in reversed micelles, preparation of colloidal catalysts, preparation of semi-conductors, magnetic particles and ceramic powders, etc.