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Author

Kwak, Sang Kyu
Kyu’s MolSim Lab @ UNIST
Research Interests
  • Molecular modeling and simulation, statistical thermodynamics, molecular physics

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One-step production of highly anisotropic particles via a microfluidic method

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Title
One-step production of highly anisotropic particles via a microfluidic method
Author
Xia, MingGo, Eun MinChoi, Kyu HwanLim, Jin HyunPark, BumkyoYu, TaekyungIm, Sang HyukKwak, Sang KyuPark, Bum Jun
Keywords
Microfluidics;  Anisotropy;  Nanoparticles;  Phase separation;  Interface
Issue Date
ACCEPT
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v., no., pp. -
Abstract
We introduce a promising protocol that can be used to fabricate polymer particles with a high degree of shape anisotropy; this method can be utilized with a variety of microfluidic generation methods. Low-density microparticles and high-density nanoparticles vertically migrated in a polymer solution confined in emulsion droplets that were produced via a microfluidic method. As the solvent evaporated in individual droplets at ambient conditions, the low-density microparticles migrated upward because their density was lower than that of the polymer solution. The high-density nanoparticles that were initially well-dispersed in the droplet phase became destabilized upon solvent removal, leading to the formation of aggregates and sedimentation in a downward direction. The migration of the particle components during solvent evaporation induced shape deformation/modification of the emulsion droplets; consequently, polymer particles with highly anisotropic shapes were created after drying.
URI
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DOI
http://dx.doi.org/10.1016/j.jiec.2018.03.033
ISSN
1226-086X
Appears in Collections:
ECHE_Journal Papers

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