Abstract
The dynamic viscosity for miscible blends of 1,4-polyisoprene and poly(vinyl ethylene) (PVE) at the extremes of composition (1% tracer in 99% matrix) has been measured as a function of temperature. Time-temperature superposition failure is observed in these tracer blends. This observation indicates that intramolecular contributions are crucial in defining the local environment experienced by a polymer segment, as anticipated by self-concentration models. The temperature dependence of the dynamics of the PVE tracer has been extracted, and compared with the model of Lodge and McLeish. The self-concentration effect was found to be even stronger than predicted.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 793-801 |
| Number of pages | 9 |
| Journal | Colloid and Polymer Science |
| Volume | 282 |
| Issue number | 8 |
| DOIs | |
| State | Published - Jun 2004 |
Keywords
- 1,4-Polyisoprene
- Dynamic viscosity
- Poly(vinyl ethylene)
- Self-concentration models
- Time-temperature superposition failure