Biocompatible and Biodegradable Ultrafine Nanoparticles of Poly(Methyl Methacrylate-co-Methacrylic Acid) Prepared via Semicontinuous Heterophase Polymerization: Kinetics and Product Characterization

Figure 7

Retention times in GPC analysis of samples of polymeric material taken at (a) 28.7 and (b) 89.7% in the copolymerization of MMA/MAA (2/1, mol/mol).