Photochemical synthesis of polymer nanoparticles in aqueous solutions using poly-N-isopropyl-acrylamide as a template

The photoinitiated polymerization of methyl-methacrylate led to the formati on of polymer latex particles using 2,3-diphenyl-butadiene as crosslinking agent and three photoinitiators of the benzoin-type in the presence of Poly -N-isopropyl-acrylamide as water soluble, hydrophobic template polymer in H 2O/DMF. After recrystallization globular latex particles were found. By usi ng benzoin-methylether as photoinitiator, "real nanoparticles" possessing a smaller diameter than 10 nm were formed among bigger particles (d> 20nm), The elementary analysis of the synthesized polymers indicated that only a s maller fraction of the template polymer (4-10 percent) was incorporated int o the latex particles.