Pulsed back-and-forward cross-flow batch membrane emulsi-
fication was successfully applied for the preparation of micro and
nano polymeric particles in a size range between 2.35 (0.14)mm
and 0.21 (0.01)mm suitable for injectable administration. The
production of particles with target size was achieved by using
membrane with different pore size (1mm and 0.1mm) and
optimized fluid-dynamic conditions. The spherical shape and
the uniformity of the particles could be easily controlled in the post emulsification step because of a fast solidification of the polymer
within the droplet.
The particle suspension revealed also a good physical stability
with a negative surface zeta potential of 41 (3) mV resulting in
high-energy barrier between particles without the formation of
aggregates. Therefore it can be potentially used as drug carrier for
the encapsulation of hydrophobic compounds.
Data indicates that pulsed back-and-forward cross-flow batch
membrane emulsification allows the control of the production of
nanoparticles with tuned structural properties at low shear
conditions. This process can offers great potentials to convert
poorly soluble, poorly absorbed and labile biologically active
substance into promising deliverable drugs. The method introduces
advances in particles production engineering in order to turn
the concept of nanoparticle technology into a realistic practical
application as the next generation of drug delivery system.