| Issue |
J. Phys. IV France
Volume 10, Number PR7, May 2000
International Workshop on Dynamics in Confinement
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|
|---|---|---|
| Page(s) | Pr7-251 - Pr7-254 | |
| DOI | https://doi.org/10.1051/jp4:2000750 | |
International Workshop on Dynamics in Confinement
J. Phys. IV France 10 (2000) Pr7-251-Pr7-254
DOI: 10.1051/jp4:2000750
1 Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, U. K.
2 Department of Experimental Physics, Chalmers University of Technology, 41296 Göteborg, Sweden
© EDP Sciences 2000
J. Phys. IV France 10 (2000) Pr7-251-Pr7-254
DOI: 10.1051/jp4:2000750
Using polymer films to probe finite size effects in glass forming materials
J.A. Forrest1 and J. Mattsson21 Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, U. K.
2 Department of Experimental Physics, Chalmers University of Technology, 41296 Göteborg, Sweden
Abstract
In this paper we discuss a model used to describe data on the reduced glass transitions observed in
thin free standing polymer films. The model is based on the simple ideas of an enhanced segmental mobility
at the polymer free surface and the existence of a characteristic length for dynamics in glass forming
materials. The model accurately describes the measured Tg values, and makes predictions on the length scale
for dynamics at temperatures near and below the bulk Tg value.
© EDP Sciences 2000