Surface modification of clay and its effect on the intercalation behavior of the polymer/clay nanocomposites

Sang-Soo Lee, Junkyung Kim

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Melt intercalation of the methylsilylated organoclays with polar polymers such as SAN was examined to verify the adhesive role of guest polymeric chains between hydrophilic clay layers, so-called "glue effect" on intercalation behavior. Once methylsilylated organoclay was melt-blended with SAN, it was found that the mixture presented significant retardation of increase of interlayer spacing, d001 with heating time, and a noticeable decrease of d001 after the methylsilylation of organoclay, implying that the diffusion of SAN was highly suppressed by the decrease of polar interaction force caused by conversion of OH to methylsiloxyl groups. However, when applying shear force for the methylsilylated organoclay/SAN nanocomposites during melt intercalation, a noticeable increase of d001 was observed, expressing that intercalation of clay by SAN occurred much more effectively because of the reduction of gluing force between host clay and guest polymers, which was well supported by dramatic improvements of mechanical properties after methylsilylation of organoclays.

Original languageEnglish
Pages (from-to)2367-2372
Number of pages6
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume42
Issue number12
DOIs
Publication statusPublished - 2004 Jun 15

Keywords

  • Clay
  • Interface
  • Methylsilylation
  • Nanocomposite
  • Specific interaction

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

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