An experimental study of extrudate swell has been carried out, involving five low-density polyethylene (LDPE) samples of approximately the same molecular size but of different frequencies of long-chain branching (LCB). The results show that the samples with higher frequencies of LCB exhibit a tenden
Influence of long chain branching on the elongational behaviour of different polyethylenes and their blends
✍ Scribed by F. P. Mantia; A. Valenza; D. Acierno
- Publisher
- Springer
- Year
- 1986
- Tongue
- English
- Weight
- 225 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0170-0839
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## 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
A study was made on the effects of polymerization conditions on the long-chain branching, molecular weight, and end-group types of polyethene produced with the metallocene-catalyst systems Et[Ind] 2 ZrCl 2 /MAO, Et[IndH 4 ] 2 ZrCl 2 /MAO, and (n-BuCp) 2 ZrCl 2 /MAO. Long-chain branching in the polye