A full-chain stochastic tube model for entangled melts and solutions of linear polymers
| Autor: | Fang Xu, Morton M. Denn, Jay D. Schieber |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Physics
Steady state Stochastic process Mechanical Engineering Constitutive equation Linear molecular geometry Mechanics Condensed Matter Physics Constraint (information theory) Chain (algebraic topology) Mechanics of Materials General Materials Science Tube (fluid conveyance) Transient response Statistical physics |
| Zdroj: | Journal of Rheology. 50:477-494 |
| ISSN: | 1520-8516 0148-6055 |
| Popis: | We describe a full-chain stochastic tube model for entangled melts and solutions of linear polymers. The model incorporates two forces that result from chain confinement: a tensile force along the chain that prevents chain collapse and a transverse force that keeps the chain within the virtual tube. The model tracks conjugate constraint pairs and utilizes a consistent approach to constraint release and renewal. Chain loops within the tube are permitted. A single time-scaling adjustable parameter is required. Model predictions are compared with published transient and steady-state data on two entangled polystyrene solutions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|