Advanced Preparation Techniques for Polymeric Nanoparticles and their Application in Drug Delivery

Nanotechnology has advanced significantly in recent decades, with the production and design of nanomaterials becoming a focal point of research. Nanomedicine, a key component of this field, involves the development of nanoscale materials for applications in imaging and drug delivery. Current research predominantly focuses on the synthesis of precisely characterized nanomaterials, particularly in terms of their size and morphology, as these parameters play a critical role in determining the behavior of nanomaterials in vivo. This paper reviews various methods for the preparation of polymeric nanoparticles, including solvent evaporation, nanoprecipitation, emulsification/ solvent diffusion, salting out, dialysis, supercritical fluid technology (SCF), and monomer polymerization techniques. Additionally, it discusses approaches such as emulsion, mini-emulsion, microemulsion, interfacial polymerization, controlled/living radical polymerization, and ionic gelation/ coacervation. Each preparation method is described in terms of its characteristics, advantages, limitations, and potential applications. The paper also explores pharmaceutical considerations and challenges associated with novel drug delivery systems. Recent literature examples are presented to highlight the impact of preparation techniques on the physicochemical properties of nanoparticles.