Preparation and Characterization of Biocompatible Polymer Particles as Potential Nanocarriers for Inhalation Therapy

Figure 5

Hypothetical steps during formation of particles during drying: (a) at high drying rates formation of crust and evaporation of water from the inner liquid core leads to a deformed particle; (b) for low drying rate and/or lower concentration of the nanosuspension, droplets evaporate uniformly and the spherical particles are formed.

(a)

(b)