Abstract
This contribution describes the influence of short-chain branching on the temperature dependence of rheological properties of polyethylene (PE) melts in shear. The materials investigated are linear and short-chain branched, metallocene-catalyzed PEs of narrow molecular mass distribution. The linear visco-elastic properties are determined by dynamic-mechanical analysis. Short-chain branching (SCB) leads to an increase of the flow activation energy. The activation energy was found to increase linearly with rising weight comonomer content.
| Original language | English |
|---|---|
| Pages (from-to) | 2449-2454 |
| Number of pages | 6 |
| Journal | Macromolecular Chemistry and Physics |
| Volume | 208 |
| Issue number | 22 |
| DOIs | |
| State | Published - 20 Nov 2007 |
| Externally published | Yes |
Keywords
- Comonomer length and content
- Flow activation energy
- Polyethylenes
- Rheology
- Short-chain branching
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry
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