Confinement effects on the local motion in nanocomposites

S. H. Anastasiadis, K. Karatasos, G. Vlachos, Evangelos Manias, E. P. Giannelis

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

The local segmental dynamics of polymers confined within the 15-20 angstrom interlayer spacing of nanocomposites consisting of poly(methyl phenyl siloxane) intercalated within organically modified silicates, has been investigated utilizing Dielectric Relaxation Spectroscopy. The effect of confinement on the local reorientational dynamics is evident by the observation of a relaxation mode, which is much faster than the segmental α-relaxation of the bulk polymer and exhibits much weaker temperature dependence. This is attributed to the restrictions placed by the interlayer spacing on the cooperative volume required for the α-relaxation.

Original languageEnglish (US)
Pages (from-to)125-130
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume543
StatePublished - Jan 1 1999
EventProceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998' - Boston, MA, USA
Duration: Nov 30 1998Dec 3 1998

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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