MICROSPHERES PREPARED FROM ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENE IN SUPERCRITICAL CO2 FLUID

摘要

@@The ultrafine polymer particles with diameters between 0.1 and 50 m have many applications, such as resin modification filler, supporter of catalyst and drug release system. It is widely studied to prepare biocompatible polymer particles for pharmaceutical purposes. Different techniques have been applied for efficient preparation, including polymerization, spray-drying, liquid anti-solvent crystallization and