Abstract
The effect of polydispersity on polymer blend phase behavior is studied by in situ small-angle X-ray scattering. In a polydisperse polyethylene (PE)/isotactic polypropylene) (iPP) blend, the enthalpic portion of the interaction parameter is greater than that of a corresponding blend with lower polydispersity. This is attributed to the presence of long chains, which provide a higher interaction energy and packing constraint, reducing the system miscibility. As expected, the radius of gyration is higher in the system with higher polydispersity.
| Original language | English |
|---|---|
| Pages (from-to) | 533-536 |
| Number of pages | 4 |
| Journal | Macromolecular Rapid Communications |
| Volume | 26 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2005 Apr 6 |
All Science Journal Classification (ASJC) codes
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry