Abstract
Polypropylene/organoclay nanocomposites have been prepared by melt blending in five different mixers: an internal mixer, two lab-scale, co-rotating vertical twin-screw mixers, a 30 mm co-rotating twin-screw extruder, and a multilayer extrusion system. The effectiveness of these mixers toward the dispersion of the clay into the polymer matrix was evaluated by TEM, X-ray diffraction, and melt rheology. Mechanical properties and coefficients of linear thermal expansion (CLTE) were also evaluated for these blends. The vertical twin-screw mixer at lower shear rate appears to provide the best mixing in terms of dispersion efficiency and modulus improvement. The combination of shear rate and residence time in the mixer is discussed in order to rationalize our results.
| Original language | English (US) |
|---|---|
| Title of host publication | Annual Technical Conference - ANTEC, Conference Proceedings |
| Pages | 2255-2259 |
| Number of pages | 5 |
| Volume | 2 |
| State | Published - Oct 14 2003 |
| Event | 61st Annual Technical Conference ANTEC 2003 - Nashville, TN, United States Duration: May 4 2003 → May 8 2003 |
Other
| Other | 61st Annual Technical Conference ANTEC 2003 |
|---|---|
| Country/Territory | United States |
| City | Nashville, TN |
| Period | 5/4/03 → 5/8/03 |
Keywords
- Melt rheology
- Nanocomposite
- Polypropylene