Asymmetric Polymer Particles with Anisotropic Curvatures by Annealing Polystyrene Microspheres on Poly(vinyl alcohol) Films

Hsiao Fan Tseng, Ming Hsiang Cheng, Kai Sheng Jeng, Jia Wei Li, Jiun-Tai Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Anisotropic polymer particles such as Janus particles have attracted significant attention in recent years because of their unique properties and unusual self-assembly behavior. Most anisotropic polymer particles synthesized so far, however, only have different chemical regions compartmentalized on the particles. It remains a great challenge to fabricate anisotropic polymer particles with different shapes within a single particle. A novel approach is developed to prepare anisotropic polymer particles that contain two hemispheres with different curvatures by annealing polystyrene microspheres on poly(vinyl alcohol) films. During the annealing process, the polymer microspheres gradually sink into the polymer films and transform to asymmetric polymer particles, driven by the surface and interfacial tensions of the polymers. Selective removal techniques are also used to confirm the morphologies of the asymmetric particles. (Figure presented.).

Original languageEnglish
Pages (from-to)1825-1831
Number of pages7
JournalMacromolecular Rapid Communications
Volume37
Issue number22
DOIs
StatePublished - 1 Nov 2016

Keywords

  • Janus particles
  • annealing
  • curvatures
  • microspheres
  • poly(vinyl alcohol)

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