Synthesis of polystyrene nanoparticles with monodisperse size distribution and positive surface charge using metal stearates

Mi Sun Kim, Seok Ki Kim, Jun Young Lee, Seung Hyun Cho, Ki Hoon Lee, Junkyung Kim, Sang Soo Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Polystyrene (PS) nanospheres with a monodisperse size distribution, positive surface charge and high molecular weight were successfully synthesized using various types of metal stearates in an aqueous NaOH medium. The diameter of the PS nanospheres was controlled from 80 to 450 nm by changing the type of metal stearate. It was also found that controlling the NaOH concentration in solution was important for producing monodisperse PS nanoparticles. The nanospheres prepared with zinc stearate possessed a positive surface charge of 60 to 80 mV, confirming that PS particles were functionalized with metal stearates. It is believed that the metal stearates provide PS particles with not only colloidal stability but also a positive surface charge.

Original languageEnglish
Pages (from-to)178-181
Number of pages4
JournalMacromolecular Research
Volume16
Issue number2
DOIs
Publication statusPublished - 2008 Feb

Keywords

  • Emulsion polymerization
  • Metal stearate
  • Monodisperse nanoparticle
  • Polystyrene
  • Positive surface charge

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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