Single emulsion microfluidic production of Janus and core-shell particles via off-chip polymerization |
| |
Authors: | Ai-di Zhu Ming-yu Guo |
| |
Institution: | 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 |
| |
Abstract: | 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 PEGbased 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. |
| |
Keywords: | Microfluidics Single emulsion Core-Shell spheres Janus particles Polymerization-induced phase-separation |
本文献已被 CNKI 万方数据 SpringerLink 等数据库收录! |
|