Mechanistic examination of pre-exfoliating confinement of surface-active polystyrene nanobeads within pristine clay

Svetlana Khvan, Junkyung Kim, Sang-Soo Lee

Research output: Contribution to journalArticle

6 Citations (Scopus)


Hydrophobic polymer (PS) nanoparticles preformed through an emulsifier-free emulsion polymerization method were successfully incorporated into a gallery of pristine sodium montmorillonite via interfacial cation exchange. The polymer beads confined between clay nanosheets were capable of (1) preventing the silicate layers from restacking and (2) maintaining the exfoliated state of clay. The increase in the abundance of surface groups promoted adsorption of the nanobeads onto the silicate surface and eventually led to the establishment of strong polymer-clay interactions. These findings suggest that, on the basis of the obtained pre-exfoliated clay masterbatch, the presence of strong polymer-clay interactions could improve the mechanical performance of nanocomposites.

Original languageEnglish
Pages (from-to)22-27
Number of pages6
JournalJournal of Colloid and Interface Science
Issue number1
Publication statusPublished - 2007 Feb 1



  • Cationic exchange
  • Polymer-clay interactions
  • Polystyrene nanobeads
  • Surface charge

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry
  • Surfaces and Interfaces

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