Elastic modulus of single-walled carbon nanotube/poly(methyl methacrylate) nanocomposites

Karl W. Putz, Cynthia A. Mitchell, Ramanan Krishnamoorti, Peter F. Green*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

126 Scopus citations

Abstract

Dynamic mechanical analysis, nuclear magnetic resonance, and thermo-gravimeric analysis experiments were performed on pure poly(methyl methacrylate) and on in situ polymerized single-walled carbon nanotube (SWNT)/PMMA nanocomposites. The addition of less than 0.1 wt % SWNT to PMMA led to an increase in the low-temperature elastic modulus of approximately 10% beyond that of pure PMMA. The glass-transition temperature and the elastic modulus at higher temperatures of the nanocomposites remained unchanged from those of pure PMMA. These changes were associated with excessive cohesive interactions between the large-surface area nanotubes and PMMA and were not due to changes in the microstructural features of the polymer during synthesis.

Original languageEnglish (US)
Pages (from-to)2286-2293
Number of pages8
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume42
Issue number12
DOIs
StatePublished - Jun 15 2004

Keywords

  • Carbon nanotube
  • Mechanical properties
  • Nanocomposite
  • PMMA
  • Relaxation

ASJC Scopus subject areas

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

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