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Composition and properties of three grades of PP resins used in the study.
| Resin Type | Grade | MFR (g/10 min) | Comonomer | Molecular Weight Modifier | Stage of Loading |
|---|---|---|---|---|---|
| homo-PP | PPH-Y24 | 26 | / | H2 | polymerization |
| impact co-PP | K7726H | 26 | ethylene | H2 | polymerization |
| impact co-PP | K9026 | 26 | ethylene | peroxide | extrusion pelleting |
