Hybrid latexes based on cerium oxide nanoparticles are synthesized via an emulsifier-free process of emulsion polymerization employing amphiphatic macro-RAFT agents. Poly(butyl acrylate-co-acrylic acid) random oligomers of various compositions and chain lengths are first obtained by RAFT copolymerization in the presence of a trithiocarbonate as controlling agent. In a second step, the seeded emulsion copolymerization of styrene and methyl acrylate is carried out in the presence of nanoceria with macro-RAFT agents adsorbed at their surface, resulting in a high incorporation efficiency of cerium oxide nanoparticles in the final hybrid latexes, as evidenced by cryo-transmission electron microscopy.
Garnier, J., Warnant, J., Lacroix-Desmazes, P., Dufils, P. E., Vinas, J., Vanderveken, Y., & Herk, van, A. M. (2012). An emulsifier-free RAFT-mediated process for the efficient synthesis of cerium oxide/polymer hybrid latexes. Macromolecular Rapid Communications, 33(16), 1388-1392. https://doi.org/10.1002/marc.201200093