Dear Nasrine Boughezala, it is a technique that involves the polymerization of a monomer(s) in the presence of nanoparticles/Nanomaterials so that nanocomposites are formed. Thare are many benifits consequently gained in terms of times of preparation and workup, and cost. Please have a look at the following links. My Regards
The technique is easy and it involves a simple reaction between the monomer and an oxidizing agent. Selecting the latter, as well as the solvent in which you will do the polymerization, requires special attention.
For detailed information, please refer to the following papers: