ABSTRACT
Biogen Idec International GmbH, Small Molecule Development International, Zug (Switzerland)
Alf Lamprecht
Besan(lon (France)
4 Nanotherapeutics Drug Delivery Concepts in Nanoscience
Colloidal dispersions comprise particles or droplets in the submicron range « l)lm Figure 1) in an aqueous suspension or emulsion, respectively. This small size of the inner phase gives such a system unique properties in terms of appearance and application. The particles are too small for sedimentation, they are held in suspension by Brownian motion of the water molecules. They have a large overall surface area and their dispersions provide a high solid content at low viscosity.
