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 language | English (US) |
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Pages (from-to) | 915-918 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 84 |
Issue number | 5 |
DOIs | |
State | Published - Jan 31 2000 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy