Abstract
The monodispersed microspheres were fabricated using a flow-focusing microcapillary device. The emulsification of
monomer TPGDA in water solution was controlled through the adjustment of internal and outer phase flow rates. Results
showed flow rates and the interface of internal and outer phase contributed to the different emulsion processes and
differences in product size. With the increase of Ca from 0.12 to 0.24, the mechanism changed from dripping to jetting. When
Ca increase to a value between 0.24 and 2.4, the mechanism changed to periodical dripping. Only the dripping mechanism
creates microspheres whose radius is determined by the orifice size..
Keywords
Microfluidics, Flow-focusing device, Mono-dispersed microspheres, Emulsions.
Citation
JIAN GANG WANG, LIANG MA, QIANG YANG, YANG QIU, HUA LIN WANG, Controlling the transition of emulsion process from dripping to jetting in a flow-focusing microcapillary device, Optoelectronics and Advanced Materials - Rapid Communications, 9, 11-12, November-December 2015, pp.1557-1560 (2015).
Submitted at: Sept. 11, 2015
Accepted at: Oct. 28, 2015