Coaxial air flow device for the production of millimeter-sized spherical hydrogel particles
M Workamp, S Alaie, JA Dijksman - Review of Scientific Instruments, 2016 - pubs.aip.org
We describe a method to produce millimeter-sized hydrogel particles, by dispersing
aqueous droplets in an oil using a nozzle and subsequently solidifying them. We show that
we can vary the size of the particles using an air flow along the nozzle. The resulting particle
size can be well predicted by a simple model where a drag force generated by the air flow,
adds to the weight pulling the droplet from the nozzle. Particles produced using this method
have diameters ranging from 0.7 to 2.3 mm. Production rates up to 0.5 ml/min per nozzle …
aqueous droplets in an oil using a nozzle and subsequently solidifying them. We show that
we can vary the size of the particles using an air flow along the nozzle. The resulting particle
size can be well predicted by a simple model where a drag force generated by the air flow,
adds to the weight pulling the droplet from the nozzle. Particles produced using this method
have diameters ranging from 0.7 to 2.3 mm. Production rates up to 0.5 ml/min per nozzle …
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