Figure 2. Characterization of nanoparticles with dynamic light scattering and zeta potential measurements. Dynamic light scattering data show the size of (A) the chitosan void nanoparticles and (B) the chitosan peptide nanoparticles. The zeta potential is shown for (C) the chitosan void nanoparticles and (D) the chitosan peptide nanoparticles. The polydispersity index for both was around 15%.