Intrinsic viscoelasticity in thin high-molecular-weight polymer films
| Autor: | Katherine R. Thomas, Ullrich Steiner, Frédéric Wintzenrieth, Xiaoyuan Sheng |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Polymers Viscosity Viscoelastic Substances High molecular weight polymer Elasticity Viscoelasticity Condensed Matter::Soft Condensed Matter chemistry.chemical_compound Electricity chemistry Shear (geology) Rheology Electric field Solvents Polystyrenes Polystyrene Elasticity (economics) Composite material Toluene |
| Zdroj: | Physical Review E. 89 |
| ISSN: | 1550-2376 1539-3755 |
| DOI: | 10.1103/physreve.89.062604 |
| Popis: | The rheology of 44-75-nm-thick polystyrene films were probed by destabilization in an electric field. The non-cross-linked films showed the hallmark of viscoelasiticy; they exhibited elastic behavior at high shear rates and viscous rheology at low shear rates for stationary applied fields. These results are interpreted in terms of surface adhesion of chain segments in contact with the substrate surface, which substantially reduces reptative molecular motion of nearly all chains within the film. |
| Databáze: | OpenAIRE |
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