Nano Spray Dryer B-90 HP Nano-spray drying for drug delivery of smallest particles 1. Introduction In the past decades, biopolymers based on lactic acid

In the past decades, biopolymers based on lactic acid and glycolic acid and their copolymers have attracted much interest as carriers in the preparation of different medical devices and drug delivery systems due to their excellent biocompatibility, biodegradability and nontoxicity in humans [1]. PLGA polymers are commercially available and approved by the US Food and Drug Administration (US FDA) for human use at various molecular weights and lactid/glycolide ratios. They are commonly used for controlled release of various molecules and several products can be found on the market [2].