| abstract |
The invention relates to the field of chemical industry, and discloses a method for preparing monodisperse microspheres by ultrasonic-induced RAFT precipitation polymerization, comprising the following steps: adding monofunctional vinyl monomers, multifunctional vinyl monomers, and RAFT reagents into a reaction vessel, And add an appropriate amount of ethanol-water mixture to it as a solvent, and place it under ultrasonic waves to initiate polymerization after bubbling high-purity argon to deoxygenate; after the polymerization is completed, unseal the reaction vessel, centrifuge and wash the white powder with ethanol several times , to obtain monodisperse microsphere samples. The invention creatively introduces ultrasound into RAFT precipitation polymerization to prepare monodisperse active microspheres, the polymerization rate is fast, the ball forming rate is high and the microspheres have strong monodispersity, and the prepared microspheres have dithioester functional groups on the surface, It is convenient for further functionalization, and has broad application prospects in the fields of adsorption separation, biomedicine and so on. |