Advanced Materials

Scalable Synthesis of a New Class of Polymer Microrods by a Liquid–Liquid Dispersion Technique


  • This study was supported by the National Science Foundation (USA, CTS-0238636) and partially by EPSRC (UK, GR/S10025/01). B. Prevo and D. Kuncicky are acknowledged for assistance with SEM experiments.


An efficient scalable process for forming polymer microrods, based on a liquid–liquid dispersion technique, is reported. Rod-like particles with diameters of 0.5–3 μm and lengths of tens of micrometers form via three concurrent processes: emulsification of polymer solution, shear-driven deformation of the drops into cylinders, and solidification into rod-like particles (see Figure). The microrods are readily oriented by electric fields.

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