Abstract
We report on neutron spin echo experiments on hydrogen-bonded polymers and compare the experimentally found dynamical structure factor with theoretical predictions. Surprisingly, we find that in the melt phase the expected scaling of the Rouse dynamics is not satisfied. We propose an explanation based upon the large spatial volume occupied by the connecting groups. When the effects of these bulky groups on the local friction are taken into account, the usual scaling behavior is restored. © 2006 The American Physical Society.
| Original language | English |
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| Article number | 031804 |
| Pages (from-to) | 031804-1/7 |
| Number of pages | 7 |
| Journal | Physical Review E - Statistical, Nonlinear, and Soft Matter Physics |
| Volume | 74 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2006 |