Abstract
Recent observations using fluorophore probes of local dynamics in polymer films have provided new insight into the glass transition. Using a percolation model, we predict the local T g in a polymer film, as a function of distance from a substrate or a free surface. Our predictions are in good agreement with the observed elevation of T g near a substrate, whereas the observed reduction of T g near a free surface is too strong to be accounted for by percolation effects.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 133-137 |
| Number of pages | 5 |
| Journal | European Physical Journal B |
| Volume | 72 |
| Issue number | 1 |
| DOIs | |
| State | Published - Nov 2009 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics