Preparation of the Polymer-Clay Nanocomposites in Exfoliated State by Interface Stabilization

Sang Soo Lee, Junkyung Kim

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

To suppress the repulsive interfacial energy between hydrophilic clay and a hydrophobic polymer matrix for polymer-clay nanocomposites, a third component of amphiphilic nature such as poly(e-caprolactone) (PCL) was introduced into the styreneacrylonitrile copolymers (SAN)/Na-montmorillonite system. Once e-caprolactone was polymerized in the presence of Na-montmorillonite, the successful ring-opening polymerization of e-caprolactone and the well-developed exfoliated structure of PCL/Namontmorillonite mixture were confirmed. Thereafter, SAN was melt-mixed with PCL/Na-montmorillonite nanocomposite, and the SAN matrix and PCL fraction were completely miscible to form a homogeneous mixture with retention of the exfoliated state of Na-montmorillonite, exhibiting that PCL effectively stabilizes the repulsive polymerclay interface and contributes to the improvement of the mechanical properties of nanocomposites.

Original languageEnglish
Pages (from-to)246-252
Number of pages7
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume42
Issue number2
DOIs
Publication statusPublished - 2004 Jan 15

Keywords

  • Clay
  • Compatibilization
  • Exfoliation
  • Nanocomposites

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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