Nanoscopic-confinement effects on local dynamics

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

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Abstract

The segmental dynamics of 1.5-2.0 nm polymer films confined between parallel solid surfaces is investigated with dielectric spectroscopy in polymer/silicate intercalated nanocomposites. The confinement effect is evident by the observation of a mode, much faster than the bulk-polymer α relaxation and exhibiting much weaker temperature dependence. This is discussed in relation to either the interlayer spacing restricting the cooperative volume of the α relaxation or to the dominance of the more mobile interphase regions as predicted by simulations; the data qualitatively support the former.

Original languageEnglish (US)
Pages (from-to)915-918
Number of pages4
JournalPhysical Review Letters
Volume84
Issue number5
DOIs
Publication statusPublished - Jan 31 2000

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Anastasiadis, S. H., Karatasos, K., Vlachos, G., Manias, E., & Giannelis, E. P. (2000). Nanoscopic-confinement effects on local dynamics. Physical Review Letters, 84(5), 915-918. https://doi.org/10.1103/PhysRevLett.84.915