Fabrication of millimeter-sized monodisperse poly(α-metylstyrene) capsules

The microencapsulation technology was utilized to fabricate millimeter-sized monodisperse poly(-methystyrene) capsules by a triple-orifice droplet generator. The effects of the flow rate of each phase on the formation of the double emulsion droplets, the diameters of double emulsion droplets and their distributions were preliminarily investigated. Based on the obtained mono-sized double emulsion droplets, poly(-methystyrene) capsules with monodispersity less than 3% and diameters ranging from 800 to 1200 m were fabricated by a level-rotation-evaporation solidification technique.