Melt-processable syndiotactic polystyrene/montmorillonite nanocomposites

M. Wang, T. C. Chung, J. W. Gilman, E. Manias

Research output: Contribution to journalArticle

85 Scopus citations

Abstract

Monoalkyl- and dialkyl-imidazolium surfactants were used to prepare organically modified montmorillonites with markedly improved thermal stability in comparison with their alkyl-ammonium equivalents (the decomposition temperatures increased by ca. 100°C). Such an increase in the thermal stability affords the opportunity to form syndiotactic polystyrene (s-PS)/imidazolium-montmorillonite nanocomposites even under static melt-intercalation conditions in the absence of high shear rates or solvents. Upon nanocomposite formation, s-PS exhibited an improvement in the thermal stability in comparison with neat s-PS, and the β-crystal form of s-PS became dominant. This crystallization response agrees with previous studies of s-PS/pyridinium-montmorillonite hybrids and is tentatively attributed to a heterogeneous nucleation action by the inorganic fillers.

Original languageEnglish (US)
Pages (from-to)3173-3187
Number of pages15
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume41
Issue number24
DOIs
StatePublished - Dec 15 2003

All Science Journal Classification (ASJC) codes

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

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