Preparation of Monodisperse Porous Polystyrene Microspheres By Shaker Method
In this paper,the shaker method,with polyvinylpyrrolidone as dispersant,water and absolute ethanol as reaction medium,azo diisobutyronitrile initiator,by dispersing polymerization to prepare mono-disperse polystyrene microspheres,and through a two-step swelling method were used to prepare porous polymer microspheres.The factors affecting the particle size,monodispersity and morphology of micro-spheres were studied.The results show that the batch preparation of monodisperse polystyrene micro-spheres can be achieved by simple shaker method.The particle size of the microspheres can be controlled at 2～3 µm,and the microspheres have good monodispersity and spherical morphology.Obvious pore struc-ture was observed in the microspheres prepared by two-step swelling method.
万方数据
维普
