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Dynamic emulsification via phase transition, interfacial transport and microfluidics
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Susanna Wonga,†, Dawei Luoa,†† , Guangnan Menga,†††, Manual Marquezb, Zhengdong Chenga,c,d
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a Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843-3122, USA
b Ynano LLC, 14148 Riverdowns S Dr., Midlothian, VA 20113-3796, USA
c Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843-3003, USA
d Professional Program in Biotechnology, Texas A&M University, College Station, TX 77843-3122, USA
† Current address: Lubrizol Oilfield Solutions, #208, 8915 - 51 Ave, Edmonton, Alberta T6E 5J3, Canada
†† Current address: 9015 Painted Daisy Lane, Katy, TX 77494, USA
††† Current address: Department of Physics, Harvard University, Cambridge, MA 02138, USA
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Abstract |
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A novel concept of emulsification is presented using a controlled first-order transition in combination with the dynamical interfacial transport and microfluidics. The evaporation of emulsion drops inside an ambient fluid with surfactants triggers nucleation and growth of solute particles in a shell near the interface between two immiscible fluids. Solute particles transport through the interface after growth. The uniformity of the produced particles depends on the uniformity of the emulsion drops. We demonstrate the fabrication of micron-sized α-eicosene particles with disk shape via this phase transition-emulsification method.
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Keywords
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Microfluidics; Emulsification; Discotic colloids; Evaporation
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