Citation: Ai-di Zhu, Ming-yu Guo. Single Emulsion Microfluidic Production of Janus and Core-Shell Particles via Off-chip Polymerization[J]. Chinese Journal of Polymer Science, ;2016, 34(3): 367-377. doi: 10.1007/s10118-016-1748-x shu

Single Emulsion Microfluidic Production of Janus and Core-Shell Particles via Off-chip Polymerization

Ai-di Zhu ¹ ,
Ming-yu Guo ^1,,

1.
Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China

Corresponding author: Ming-yu Guo,
Received Date: 23 September 2015
Revised Date: 24 October 2015

Fund Project: This work was financially supported by the National Natural Science Foundation of China (Nos. 21274102 and 21304063) and the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions.

In this work, we describe a straightforward approach to produce monodisperse Janus and core-shell particles by using organic solvent free single emulsion droplet-based microfluidic device combining with off-chip polymerization. To accomplish this, methyl methacrylate (MMA) was used as both the oil phase and solvent to dissolve a polymerizable PEG-based macromolecular surfactant, instead of traditional surfactant, and the photo-initiator. Janus particles can be easily obtained by off-chip UV polymerization due to polymerization induced phase separation between PEG and the formed poly(methyl methacrylate). At the same time, core-shell particles can also be easily attained by inverting the original collecting tube several times and then exposing to UV light. These results may extend the scope of microfluidic technology and the studies on polymerization induced self-assembly/phase-separation into easy fabrication of various new functional materials.
- Microfluidics,
- Single emulsion,
- Core-Shell spheres,
- Janus particles,
- Polymerization-induced phase-separation
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