Study on the Preparation Method and Application Prospect of Drug-Carrying Microspheres of Polylactic Acid and its Copolymers

This paper reviews the principles, advantages and disadvantages, and scope of application of different processes for the preparation of drug-carrying microspheres of polylactic acid (PLA) and its copolymers, and explores the potential of PLA drug-carrying microspheres for drug delivery, tissue engineering and fluorescent labeling, etc. It also summarizes the limitations of the current technology, and proposes to optimize the drug-carrying system through the design of bilayer structured, responsive and multifunctional integrated microspheres, with a view to providing theoretical basis and technical support to the research of the related fields. We also summarize the limitations of the current technology and propose to optimize the drug-carrying system by designing bilayer structure, responsive and multifunctional integrated microspheres, in order to provide theoretical basis and technical support for the related fields.